色の赤、緑、青の要素（チャネルあたり8ビット、0〜255）の3つの数値を指定すると、プログラムは指定された色の名前を出力する必要があります。

例えば;

Input:  255, 0, 0  
Output: Red

または;

Input:  80, 0, 0
Output: Dark Red

これは人気コンテストなので、7月1日までに最も多くの票を獲得した方が勝ちます。

Ispired by：入力RGBカラーを表示

Python

これは、xkcdのColor Surveyの結果を使用するPythonスクリプトです。RandallMunroe は何千人もの人々にまったく同じ質問をしました。彼は次のチャートに到着しました。

調査には、完全に飽和した色に関するデータのみが含まれています（飽和していない色はすべて「灰色」と表現されると思います）。これは、入力を完全に飽和させるために、色に関連するいくつかのトリックを実行する必要があることを意味します。

ここで行ったことは、入力色をHSVに変換し、彩度を上げて1日と呼ぶだけです。これはおそらく色知覚の観点からはあまり正確ではありませんが、ここでは十分に機能します。また、標準ライブラリのみが必要なほど簡単です。バッテリーは確かに含まれています。

スクリプトから、satfaces.txt見込んでここ（ミラーカレントディレクトリにあると、）。

import sys, colorsys

n = (int(sys.argv[1], 16))
r = ((n & 0xff0000) >> 16) / 255.0
g = ((n & 0x00ff00) >> 8) / 255.0
b = ((n & 0x0000ff)) / 255.0

(h, s, v) = colorsys.rgb_to_hsv(r, g, b)
(r, g, b) = colorsys.hsv_to_rgb(h, 1, v)

match = "[{}, {}, {}]".format(int(r*255), int(g*255), int(b*255))

for line in open("satfaces.txt"):
    if line.startswith(match):
        print("You were thinking of: " + line.split("] ")[1].strip())
        break

いくつかの例を実行します：

$ python color.py CEB301
You were thinking of: yellow
$ python color.py CC9900
You were thinking of: orange
$ python color.py CC0000
You were thinking of: red
$ python color.py 0077FF
You were thinking of: blue

そして、ここに色があります：

かなり近いと思います。

GUIで更新してください！

このウィキペディアのページ（および関連ページ）からカラーリストを取得します。

また、「緑と青がやや少ないブルガリアローズ」などの結果を生成するためのNLGと、そのバリエーションをいくつか含めました。これらのフィードバックを使用して、真の「ブルガリアローズ」を推測できるかどうかを確認してください。:)

アルゴリズムは、ユークリッド距離で定義されているように、入力に最も近い色を見つけようとします。したがって、任意の数のトリプレットを入力でき、そのトリプレットに最も近い色が得られます。

（コードは、「コンマ区切り」、「スペース区切り」、または「コンマ区切り」の値を受け入れます）

警告

このコードはWikipediaに接続するため、最初に実行するために（そして同じ辞書のファイルに情報を書き込むために）インターネット接続が必要です。ただし、それ以降はファイルから読み取ります。オフラインバージョンが必要な場合は、このIdeoneリンクでコードを利用できます（サンプルの実行あり）。

コード：

import re, os
from bs4 import BeautifulSoup as BS
import requests
import cPickle as pickle
import random

def encode_color(text):
    return tuple(map(int, re.split(', |,| ', text)))

def color_name(col):
    global color_map, color_nums
    arr = color_nums
    closest = None
    min_dist = 10**8
    for color in arr:
        dist = sum((color[i]-col[i])**2 for i in range(3))
        if dist < min_dist:
            closest = color
            min_dist = dist
    result = color_map[closest]
    rgb = ['red', 'green', 'blue']
    slightly_more = ['with a hint of', 'with traces of', 'with slightly more']
    slightly_less = ['with subdued', 'with slightly less']
    more_more = ['with more', 'with strong hint of']
    more_less = ['with less', 'with diminished']
    count = 0
    adds = ['','']
    for i in range(3):
        expl_list = ['']
        if 5 < col[i]-closest[i] < 10:
            expl_list = slightly_more
            count += 1
            add_idx = 0
        elif 10 <= col[i]-closest[i]:
            expl_list = more_more
            count += 2
            add_idx = 0
        elif -10 <= col[i]-closest[i] < -5:
            expl_list = slightly_less
            count -= 1
            add_idx = 1
        elif col[i]-closest[i] <= -10:
            expl_list = more_less
            count -= 2
            add_idx = 1
        expl = expl_list[random.randint(0, len(expl_list)-1)]
        if expl is not '':
            if adds[add_idx] is '':
                adds[add_idx] += ' %s %s' % (expl, rgb[i])
            else:
                adds[add_idx] += ' and %s' % rgb[i]
    if 3 <= count <= 4:
        result = 'A slightly brighter '+result
    elif 4 < count:
        result = 'A brighter '+result
    elif -4 <= count <= -3:
        result = 'A slightly darker '+result
    elif count < -4:
        result = 'A darker '+result
    elif count > 0:
        result += adds[0]
    elif count < 0:
        result += adds[1]
    return result

links = ['http://en.wikipedia.org/wiki/List_of_colors:_A%E2%80%93F',
         'http://en.wikipedia.org/wiki/List_of_colors:_G%E2%80%93M',
         'http://en.wikipedia.org/wiki/List_of_colors:_N%E2%80%93Z']

def is_color(tag):
    return tag.name == 'th' and len(tag.contents)==1 and tag.contents[0].name=='a'

def parse_color(hexa):
    return (int(hexa[0:2], 16), int(hexa[2:4], 16), int(hexa[4:6], 16))

print 'Loading color names...'
if os.path.exists('parse_wiki_color.pickle'):
    with open('parse_wiki_color.pickle', 'rb') as infile:
        color_map, color_nums = pickle.load(infile)
else:
    color_map = {}
    color_nums = []
    for link in links:
        soup = BS(requests.get(link).text,'lxml')
        for color in soup.find_all(is_color):
            try:
                color_num = parse_color(color.next_sibling.next_sibling.string[1:])
                color_nums.append(color_num)
                color_map[color_num] = str(color.a.string)
            except:
                continue
    color_nums = sorted(color_nums)
    with open('parse_wiki_color.pickle', 'wb') as outfile:
        pickle.dump((color_map, color_nums), outfile, protocol=2)
print 'Color names loaded'

def main(event=None):
    global var, col_name, col_disp
    text = var.get()
    color = encode_color(text)
    result = color_name(color)
    col_name.set(result)
    col_rgb.set(color)
    var.set('')
    col_disp.configure(background='#%02x%02x%02x' % color)

from Tkinter import *
root = Tk()
frame = Frame(root)
frame.pack()
caption = Label(frame, text='Enter RGB color:')
caption.pack(side=LEFT)
var = StringVar()
entry = Entry(frame, textvariable=var)
entry.focus_set()
entry.pack(side=LEFT)
entry.bind('<Return>',func=main)
button = Button(frame, text='Get name', command=main)
button.pack(side=LEFT)
col_rgb = StringVar()
col_rgb_disp = Label(root, textvariable=col_rgb)
col_rgb_disp.pack()
col_name = StringVar()
col_label = Label(root, textvariable=col_name)
col_label.pack()
col_disp = Label(root)
col_disp.configure(padx=50, pady=45, relief=RAISED)
col_disp.pack()
root.geometry('400x200')
root.mainloop()

JavaScript

次の関数は、犬のユーザーを念頭に置いて作成されています。

function getColorName(r, g, b) {
    return "gray";
}

より洗練された犬のために：

function getColorName(r, g, b) {
    var gray = (0.21*r + 0.71*g + 0.07*b);
    if (gray < 64)
        return "black";
    else if (gray < 128)
        return "dark gray";
    else if (gray < 192)
        return "light gray";
    else if (gray < 256)
        return "white";
    else
        whimper();
}

Javascript

window.location = 'http://www.color-hex.com/color/' + 'ff00ff'

Mathematica

更新：表示する最も近い色の数を設定するパラメーターが追加されました。デフォルトは5色です。

名前のない色のRGB値を指定すると、以下はn140のHTML色名のリストから最も近い色を見つけます。次に、赤、緑、青の軸を使用して、名前のない色とその5つの最近傍を3空間にプロットします。プロットラベルでは、最も近い色に名前を付け、RGB値を提供します。

colorInterpret[rgb_,n_: 5]:=
Module[{colorData,valsRGB,pts,closest},
colorData=({ColorData["HTML",#],#}&/@ColorData["HTML","Range"][[1]])/.{RGBColor[x__]:> {x}};
valsRGB=colorData[[All,1]];
pts=Append[colorData[[Position[valsRGB,#]&/@Nearest[valsRGB,rgb,n]//Flatten]],{rgb,"Unnamed Color"}];
closest=pts[[1]];
Graphics3D[{PointSize[.05],
{RGBColor@@#,Point[#],Text[Style[#2,Black,14],(#-{.01,.01,.01})]}&@@@pts
},
Axes-> True,
PlotLabel-> Row[{"closest color: ", closest}],
ImageSize-> 600,
ImagePadding-> 50,
BaseStyle-> 14,
AxesLabel->{Style["Red",18],Style["Green",18],Style["Blue",18]}]]

例

最も近い5色を表示します。

 colorInterpret[{.55, .86, .69}]

最も近い15色を表示します。

CJam

l~]:X;"xkcd.com/color/rgb.txt"gN%"  "f%{[1=1>eu2/{:~Gb}%X]z{:-}%2f#:+}$0=0=

これは、xkcdから色のリストを取得し、最も近いものを見つけます。
注：中央のスペースに見える文字列は、実際には1つのタブです。

実行するには、http：//sf.net/p/cjamのインタープリターを使用してください

例：

入力147 125 0
出力baby poop

R

Rには、プロット用に657色名の埋め込みリストがあります。次のコードはユーザーからの入力を受け取り、このrgb入力とこれらの657色のrgb値の間の距離を計算し、最も近い色の名前を出力します。

a=as.integer(strsplit(readline(),", ")[[1]]);color_list=sapply(colors(),col2rgb);names(which.min(colSums(abs(apply(color_list,2,function(x)x-a)))))

ゴルフをしていない：

a <- as.integer(strsplit(readline(),", ")[[1]]) #Ask user input as stdin, and process it
color_list <- sapply(colors(),col2rgb) #Convert the color name list into an RGB matrix
#Computes the difference with user input, adds the absolute value and output the name of the element with the minimal value
names(which.min(colSums(abs(apply(color_list, 2, function(x)x-a)))))

例：

> a=as.integer(strsplit(readline(),", ")[[1]]);color_list=sapply(colors(),col2rgb);names(which.min(colSums(abs(apply(color_list,2,function(x)x-a)))))
80, 0, 2
[1] "darkred"
> a=as.integer(strsplit(readline(),", ")[[1]]);color_list=sapply(colors(),col2rgb);names(which.min(colSums(abs(apply(color_list,2,function(x)x-a)))))
150, 150, 150
[1] "gray59"
> a=as.integer(strsplit(readline(),", ")[[1]]);color_list=sapply(colors(),col2rgb);names(which.min(colSums(abs(apply(color_list,2,function(x)x-a)))))
0, 200, 255
[1] "deepskyblue"
> a=as.integer(strsplit(readline(),", ")[[1]]);color_list=sapply(colors(),col2rgb);names(which.min(colSums(abs(apply(color_list,2,function(x)x-a)))))
255, 100, 70
[1] "tomato"

編集： 同じ考えですが、colorHexaの名前のリストを使用します。

a=strsplit(xpathSApply(htmlParse("http://www.colorhexa.com/color-names"),"//li",xmlValue),"#")
n=sapply(a,`[`,1)
r=apply(do.call(rbind,strsplit(sapply(a,`[`,2)," "))[,2:4],2,as.integer)
n[which.min(colSums(abs(apply(r,1,`-`,as.integer(strsplit(readline(),", ")[[1]])))))]

例：

> a=strsplit(xpathSApply(htmlParse("http://www.colorhexa.com/color-names"),"//li",xmlValue),"#")
> n=sapply(a,`[`,1)
> r=apply(do.call(rbind,strsplit(sapply(a,`[`,2)," "))[,2:4],2,as.integer)
> n[which.min(colSums(abs(apply(r,1,`-`,as.integer(strsplit(readline(),", ")[[1]])))))]
208, 32, 12
[1] " Fire engine red "

Perl

http://xkcd.com/color/rgb.txt現在のディレクトリに期待します。ナイスパーセンテージで最も近い5つの色を表示します。

実行例

> perl code.pl
147,125,0
99.87% baby poop
98.44% yellowish brown
98.31% puke brown
97.79% poo
97.27% diarrhea

コード

#!perl -w
use strict;

sub hex2rgb ($) {
    my ($h) = @_;
    map {hex} ($h=~/[0-9a-fA-F]{2}/g)
}

sub distance ($$) {
    my ($acol1, $acol2) = @_;
    my $r = 0;
    $r += abs($acol1->[$_] - $acol2->[$_]) for (0..$#$acol1);
    $r
}

sub read_rgb {
    open my $rgb, '<', 'rgb.txt' or die $!;
    my @col;
    while (<$rgb>) {
    my ($name, $hex) = split /\t#/;
    my @rgb = hex2rgb $hex;
    push @col, [@rgb, $name];
    }
    close $rgb;
    \@col
}

my $acolours = read_rgb;
my @C = split /, */, <>;

printf "%.02f%% %s\n", (768-$_->[0])/768*100, $_->[4] for 
    (sort {$a->[0] <=> $b->[0]} 
     map [distance(\@C, $_), @$_], @$acolours)[0..4];

スカラ

私の試み—キラー機能は、インターネット接続を必要としないことです！（長すぎないことを祈ります：D）また、カラーデータベースの準備中にChtulhuを呼び出しました（正規表現でHTMLのサブセットを解析したため、正規表現とソースへのリンクはコメントにあります）

編集：精度の向上

実行例：http : //ideone.com/e3n0dG

object Main {

  def main(args: Array[String]) {
    val color = extractBrightness(readLine().split("[, ]+").map(_.toInt))

    val nearestColor = colors.minBy(t => distance(extractBrightness(parseColor(t._1)), color, weight))._2
    println(s"Your color is $nearestColor")
  }

  def parseColor(s: String) = {
    s.sliding(2, 2).map(Integer.parseInt(_, 16)).toVector
  }

  def distance(c1: Seq[Double], c2: Seq[Double], weight: Seq[Double]) = {
    c1.zip(c2).map(t => ((x: Double) => x * x)(t._1 - t._2)).zip(weight).map(t => t._1 * t._2).sum
  }

  val weight = Vector(0.01, 1.0, 0.8)

  def extractBrightness(c: Seq[Int]) = {
    val Seq(r, g, b) = c
    val brightness = c.sum.toDouble / 3
    val rOffset = r - brightness
    val bOffset = b - brightness
    Seq(brightness, rOffset, bOffset)
  }

  // colors are extracted by using this regex: <li>[\s\S]*?<a href="/......">([\w ]+)</a>[\s\S]*?<a href="/......">#(......)</a>[\s\S]*?</li>
  // from this page: http://www.colorhexa.com/color-names
  val colors = Vector(
    "5d8aa8" -> "Air Force blue",
    "f0f8ff" -> "Alice blue",
    "e32636" -> "Alizarin crimson",
    "efdecd" -> "Almond",
    "e52b50" -> "Amaranth",
    "ffbf00" -> "Amber",
    "ff033e" -> "American rose",
    "9966cc" -> "Amethyst",
    "a4c639" -> "Android Green",
    "cd9575" -> "Antique brass",
    "915c83" -> "Antique fuchsia",
    "faebd7" -> "Antique white",
    "008000" -> "Ao",
    "8db600" -> "Apple green",
    "fbceb1" -> "Apricot",
    "00ffff" -> "Aqua",
    "7fffd4" -> "Aquamarine",
    "4b5320" -> "Army green",
    "e9d66b" -> "Arylide yellow",
    "b2beb5" -> "Ash grey",
    "87a96b" -> "Asparagus",
    "ff9966" -> "Atomic tangerine",
    "a52a2a" -> "Auburn",
    "fdee00" -> "Aureolin",
    "6e7f80" -> "AuroMetalSaurus",
    "ff2052" -> "Awesome",
    "007fff" -> "Azure",
    "89cff0" -> "Baby blue",
    "a1caf1" -> "Baby blue eyes",
    "f4c2c2" -> "Baby pink",
    "21abcd" -> "Ball Blue",
    "fae7b5" -> "Banana Mania",
    "ffe135" -> "Banana yellow",
    "848482" -> "Battleship grey",
    "98777b" -> "Bazaar",
    "bcd4e6" -> "Beau blue",
    "9f8170" -> "Beaver",
    "f5f5dc" -> "Beige",
    "ffe4c4" -> "Bisque",
    "3d2b1f" -> "Bistre",
    "fe6f5e" -> "Bittersweet",
    "000000" -> "Black",
    "ffebcd" -> "Blanched Almond",
    "318ce7" -> "Bleu de France",
    "ace5ee" -> "Blizzard Blue",
    "faf0be" -> "Blond",
    "0000ff" -> "Blue",
    "a2a2d0" -> "Blue Bell",
    "6699cc" -> "Blue Gray",
    "0d98ba" -> "Blue green",
    "8a2be2" -> "Blue purple",
    "8a2be2" -> "Blue violet",
    "de5d83" -> "Blush",
    "79443b" -> "Bole",
    "0095b6" -> "Bondi blue",
    "e3dac9" -> "Bone",
    "cc0000" -> "Boston University Red",
    "006a4e" -> "Bottle green",
    "873260" -> "Boysenberry",
    "0070ff" -> "Brandeis blue",
    "b5a642" -> "Brass",
    "cb4154" -> "Brick red",
    "1dacd6" -> "Bright cerulean",
    "66ff00" -> "Bright green",
    "bf94e4" -> "Bright lavender",
    "c32148" -> "Bright maroon",
    "ff007f" -> "Bright pink",
    "08e8de" -> "Bright turquoise",
    "d19fe8" -> "Bright ube",
    "f4bbff" -> "Brilliant lavender",
    "ff55a3" -> "Brilliant rose",
    "fb607f" -> "Brink pink",
    "004225" -> "British racing green",
    "cd7f32" -> "Bronze",
    "a52a2a" -> "Brown",
    "ffc1cc" -> "Bubble gum",
    "e7feff" -> "Bubbles",
    "f0dc82" -> "Buff",
    "480607" -> "Bulgarian rose",
    "800020" -> "Burgundy",
    "deb887" -> "Burlywood",
    "cc5500" -> "Burnt orange",
    "e97451" -> "Burnt sienna",
    "8a3324" -> "Burnt umber",
    "bd33a4" -> "Byzantine",
    "702963" -> "Byzantium",
    "007aa5" -> "CG Blue",
    "e03c31" -> "CG Red",
    "536872" -> "Cadet",
    "5f9ea0" -> "Cadet blue",
    "91a3b0" -> "Cadet grey",
    "006b3c" -> "Cadmium green",
    "ed872d" -> "Cadmium orange",
    "e30022" -> "Cadmium red",
    "fff600" -> "Cadmium yellow",
    "a67b5b" -> "Café au lait",
    "4b3621" -> "Café noir",
    "1e4d2b" -> "Cal Poly Pomona green",
    "a3c1ad" -> "Cambridge Blue",
    "c19a6b" -> "Camel",
    "78866b" -> "Camouflage green",
    "ffff99" -> "Canary",
    "ffef00" -> "Canary yellow",
    "ff0800" -> "Candy apple red",
    "e4717a" -> "Candy pink",
    "00bfff" -> "Capri",
    "592720" -> "Caput mortuum",
    "c41e3a" -> "Cardinal",
    "00cc99" -> "Caribbean green",
    "ff0040" -> "Carmine",
    "eb4c42" -> "Carmine pink",
    "ff0038" -> "Carmine red",
    "ffa6c9" -> "Carnation pink",
    "b31b1b" -> "Carnelian",
    "99badd" -> "Carolina blue",
    "ed9121" -> "Carrot orange",
    "ace1af" -> "Celadon",
    "b2ffff" -> "Celeste",
    "4997d0" -> "Celestial blue",
    "de3163" -> "Cerise",
    "ec3b83" -> "Cerise pink",
    "007ba7" -> "Cerulean",
    "2a52be" -> "Cerulean blue",
    "a0785a" -> "Chamoisee",
    "fad6a5" -> "Champagne",
    "36454f" -> "Charcoal",
    "7fff00" -> "Chartreuse",
    "de3163" -> "Cherry",
    "ffb7c5" -> "Cherry blossom pink",
    "cd5c5c" -> "Chestnut",
    "d2691e" -> "Chocolate",
    "ffa700" -> "Chrome yellow",
    "98817b" -> "Cinereous",
    "e34234" -> "Cinnabar",
    "d2691e" -> "Cinnamon",
    "e4d00a" -> "Citrine",
    "fbcce7" -> "Classic rose",
    "0047ab" -> "Cobalt",
    "d2691e" -> "Cocoa brown",
    "6f4e37" -> "Coffee",
    "9bddff" -> "Columbia blue",
    "002e63" -> "Cool black",
    "8c92ac" -> "Cool grey",
    "b87333" -> "Copper",
    "996666" -> "Copper rose",
    "ff3800" -> "Coquelicot",
    "ff7f50" -> "Coral",
    "f88379" -> "Coral pink",
    "ff4040" -> "Coral red",
    "893f45" -> "Cordovan",
    "fbec5d" -> "Corn",
    "b31b1b" -> "Cornell Red",
    "9aceeb" -> "Cornflower",
    "6495ed" -> "Cornflower blue",
    "fff8dc" -> "Cornsilk",
    "fff8e7" -> "Cosmic latte",
    "ffbcd9" -> "Cotton candy",
    "fffdd0" -> "Cream",
    "dc143c" -> "Crimson",
    "990000" -> "Crimson Red",
    "be0032" -> "Crimson glory",
    "00ffff" -> "Cyan",
    "ffff31" -> "Daffodil",
    "f0e130" -> "Dandelion",
    "00008b" -> "Dark blue",
    "654321" -> "Dark brown",
    "5d3954" -> "Dark byzantium",
    "a40000" -> "Dark candy apple red",
    "08457e" -> "Dark cerulean",
    "986960" -> "Dark chestnut",
    "cd5b45" -> "Dark coral",
    "008b8b" -> "Dark cyan",
    "536878" -> "Dark electric blue",
    "b8860b" -> "Dark goldenrod",
    "a9a9a9" -> "Dark gray",
    "013220" -> "Dark green",
    "1a2421" -> "Dark jungle green",
    "bdb76b" -> "Dark khaki",
    "483c32" -> "Dark lava",
    "734f96" -> "Dark lavender",
    "8b008b" -> "Dark magenta",
    "003366" -> "Dark midnight blue",
    "556b2f" -> "Dark olive green",
    "ff8c00" -> "Dark orange",
    "9932cc" -> "Dark orchid",
    "779ecb" -> "Dark pastel blue",
    "03c03c" -> "Dark pastel green",
    "966fd6" -> "Dark pastel purple",
    "c23b22" -> "Dark pastel red",
    "e75480" -> "Dark pink",
    "003399" -> "Dark powder blue",
    "872657" -> "Dark raspberry",
    "8b0000" -> "Dark red",
    "e9967a" -> "Dark salmon",
    "560319" -> "Dark scarlet",
    "8fbc8f" -> "Dark sea green",
    "3c1414" -> "Dark sienna",
    "483d8b" -> "Dark slate blue",
    "2f4f4f" -> "Dark slate gray",
    "177245" -> "Dark spring green",
    "918151" -> "Dark tan",
    "ffa812" -> "Dark tangerine",
    "483c32" -> "Dark taupe",
    "cc4e5c" -> "Dark terra cotta",
    "00ced1" -> "Dark turquoise",
    "9400d3" -> "Dark violet",
    "00693e" -> "Dartmouth green",
    "555555" -> "Davy grey",
    "d70a53" -> "Debian red",
    "a9203e" -> "Deep carmine",
    "ef3038" -> "Deep carmine pink",
    "e9692c" -> "Deep carrot orange",
    "da3287" -> "Deep cerise",
    "fad6a5" -> "Deep champagne",
    "b94e48" -> "Deep chestnut",
    "704241" -> "Deep coffee",
    "c154c1" -> "Deep fuchsia",
    "004b49" -> "Deep jungle green",
    "9955bb" -> "Deep lilac",
    "cc00cc" -> "Deep magenta",
    "ffcba4" -> "Deep peach",
    "ff1493" -> "Deep pink",
    "ff9933" -> "Deep saffron",
    "00bfff" -> "Deep sky blue",
    "1560bd" -> "Denim",
    "c19a6b" -> "Desert",
    "edc9af" -> "Desert sand",
    "696969" -> "Dim gray",
    "1e90ff" -> "Dodger blue",
    "d71868" -> "Dogwood rose",
    "85bb65" -> "Dollar bill",
    "967117" -> "Drab",
    "00009c" -> "Duke blue",
    "e1a95f" -> "Earth yellow",
    "c2b280" -> "Ecru",
    "614051" -> "Eggplant",
    "f0ead6" -> "Eggshell",
    "1034a6" -> "Egyptian blue",
    "7df9ff" -> "Electric blue",
    "ff003f" -> "Electric crimson",
    "00ffff" -> "Electric cyan",
    "00ff00" -> "Electric green",
    "6f00ff" -> "Electric indigo",
    "f4bbff" -> "Electric lavender",
    "ccff00" -> "Electric lime",
    "bf00ff" -> "Electric purple",
    "3f00ff" -> "Electric ultramarine",
    "8f00ff" -> "Electric violet",
    "ffff00" -> "Electric yellow",
    "50c878" -> "Emerald",
    "96c8a2" -> "Eton blue",
    "c19a6b" -> "Fallow",
    "801818" -> "Falu red",
    "ff00ff" -> "Famous",
    "b53389" -> "Fandango",
    "f400a1" -> "Fashion fuchsia",
    "e5aa70" -> "Fawn",
    "4d5d53" -> "Feldgrau",
    "71bc78" -> "Fern",
    "4f7942" -> "Fern green",
    "ff2800" -> "Ferrari Red",
    "6c541e" -> "Field drab",
    "ce2029" -> "Fire engine red",
    "b22222" -> "Firebrick",
    "e25822" -> "Flame",
    "fc8eac" -> "Flamingo pink",
    "f7e98e" -> "Flavescent",
    "eedc82" -> "Flax",
    "fffaf0" -> "Floral white",
    "ffbf00" -> "Fluorescent orange",
    "ff1493" -> "Fluorescent pink",
    "ccff00" -> "Fluorescent yellow",
    "ff004f" -> "Folly",
    "228b22" -> "Forest green",
    "a67b5b" -> "French beige",
    "0072bb" -> "French blue",
    "86608e" -> "French lilac",
    "f64a8a" -> "French rose",
    "ff00ff" -> "Fuchsia",
    "ff77ff" -> "Fuchsia pink",
    "e48400" -> "Fulvous",
    "cc6666" -> "Fuzzy Wuzzy",
    "dcdcdc" -> "Gainsboro",
    "e49b0f" -> "Gamboge",
    "f8f8ff" -> "Ghost white",
    "b06500" -> "Ginger",
    "6082b6" -> "Glaucous",
    "e6e8fa" -> "Glitter",
    "ffd700" -> "Gold",
    "996515" -> "Golden brown",
    "fcc200" -> "Golden poppy",
    "ffdf00" -> "Golden yellow",
    "daa520" -> "Goldenrod",
    "a8e4a0" -> "Granny Smith Apple",
    "808080" -> "Gray",
    "465945" -> "Gray asparagus",
    "00ff00" -> "Green",
    "1164b4" -> "Green Blue",
    "adff2f" -> "Green yellow",
    "a99a86" -> "Grullo",
    "00ff7f" -> "Guppie green",
    "663854" -> "Halayà úbe",
    "446ccf" -> "Han blue",
    "5218fa" -> "Han purple",
    "e9d66b" -> "Hansa yellow",
    "3fff00" -> "Harlequin",
    "c90016" -> "Harvard crimson",
    "da9100" -> "Harvest Gold",
    "808000" -> "Heart Gold",
    "df73ff" -> "Heliotrope",
    "f400a1" -> "Hollywood cerise",
    "f0fff0" -> "Honeydew",
    "49796b" -> "Hooker green",
    "ff1dce" -> "Hot magenta",
    "ff69b4" -> "Hot pink",
    "355e3b" -> "Hunter green",
    "fcf75e" -> "Icterine",
    "b2ec5d" -> "Inchworm",
    "138808" -> "India green",
    "cd5c5c" -> "Indian red",
    "e3a857" -> "Indian yellow",
    "4b0082" -> "Indigo",
    "002fa7" -> "International Klein Blue",
    "ff4f00" -> "International orange",
    "5a4fcf" -> "Iris",
    "f4f0ec" -> "Isabelline",
    "009000" -> "Islamic green",
    "fffff0" -> "Ivory",
    "00a86b" -> "Jade",
    "f8de7e" -> "Jasmine",
    "d73b3e" -> "Jasper",
    "a50b5e" -> "Jazzberry jam",
    "fada5e" -> "Jonquil",
    "bdda57" -> "June bud",
    "29ab87" -> "Jungle green",
    "e8000d" -> "KU Crimson",
    "4cbb17" -> "Kelly green",
    "c3b091" -> "Khaki",
    "087830" -> "La Salle Green",
    "d6cadd" -> "Languid lavender",
    "26619c" -> "Lapis lazuli",
    "fefe22" -> "Laser Lemon",
    "a9ba9d" -> "Laurel green",
    "cf1020" -> "Lava",
    "e6e6fa" -> "Lavender",
    "ccccff" -> "Lavender blue",
    "fff0f5" -> "Lavender blush",
    "c4c3d0" -> "Lavender gray",
    "9457eb" -> "Lavender indigo",
    "ee82ee" -> "Lavender magenta",
    "e6e6fa" -> "Lavender mist",
    "fbaed2" -> "Lavender pink",
    "967bb6" -> "Lavender purple",
    "fba0e3" -> "Lavender rose",
    "7cfc00" -> "Lawn green",
    "fff700" -> "Lemon",
    "fff44f" -> "Lemon Yellow",
    "fffacd" -> "Lemon chiffon",
    "bfff00" -> "Lemon lime",
    "f56991" -> "Light Crimson",
    "e68fac" -> "Light Thulian pink",
    "fdd5b1" -> "Light apricot",
    "add8e6" -> "Light blue",
    "b5651d" -> "Light brown",
    "e66771" -> "Light carmine pink",
    "f08080" -> "Light coral",
    "93ccea" -> "Light cornflower blue",
    "e0ffff" -> "Light cyan",
    "f984ef" -> "Light fuchsia pink",
    "fafad2" -> "Light goldenrod yellow",
    "d3d3d3" -> "Light gray",
    "90ee90" -> "Light green",
    "f0e68c" -> "Light khaki",
    "b19cd9" -> "Light pastel purple",
    "ffb6c1" -> "Light pink",
    "ffa07a" -> "Light salmon",
    "ff9999" -> "Light salmon pink",
    "20b2aa" -> "Light sea green",
    "87cefa" -> "Light sky blue",
    "778899" -> "Light slate gray",
    "b38b6d" -> "Light taupe",
    "ffffed" -> "Light yellow",
    "c8a2c8" -> "Lilac",
    "bfff00" -> "Lime",
    "32cd32" -> "Lime green",
    "195905" -> "Lincoln green",
    "faf0e6" -> "Linen",
    "c19a6b" -> "Lion",
    "534b4f" -> "Liver",
    "e62020" -> "Lust",
    "18453b" -> "MSU Green",
    "ffbd88" -> "Macaroni and Cheese",
    "ff00ff" -> "Magenta",
    "aaf0d1" -> "Magic mint",
    "f8f4ff" -> "Magnolia",
    "c04000" -> "Mahogany",
    "fbec5d" -> "Maize",
    "6050dc" -> "Majorelle Blue",
    "0bda51" -> "Malachite",
    "979aaa" -> "Manatee",
    "ff8243" -> "Mango Tango",
    "74c365" -> "Mantis",
    "800000" -> "Maroon",
    "e0b0ff" -> "Mauve",
    "915f6d" -> "Mauve taupe",
    "ef98aa" -> "Mauvelous",
    "73c2fb" -> "Maya blue",
    "e5b73b" -> "Meat brown",
    "0067a5" -> "Medium Persian blue",
    "66ddaa" -> "Medium aquamarine",
    "0000cd" -> "Medium blue",
    "e2062c" -> "Medium candy apple red",
    "af4035" -> "Medium carmine",
    "f3e5ab" -> "Medium champagne",
    "035096" -> "Medium electric blue",
    "1c352d" -> "Medium jungle green",
    "dda0dd" -> "Medium lavender magenta",
    "ba55d3" -> "Medium orchid",
    "9370db" -> "Medium purple",
    "bb3385" -> "Medium red violet",
    "3cb371" -> "Medium sea green",
    "7b68ee" -> "Medium slate blue",
    "c9dc87" -> "Medium spring bud",
    "00fa9a" -> "Medium spring green",
    "674c47" -> "Medium taupe",
    "0054b4" -> "Medium teal blue",
    "48d1cc" -> "Medium turquoise",
    "c71585" -> "Medium violet red",
    "fdbcb4" -> "Melon",
    "191970" -> "Midnight blue",
    "004953" -> "Midnight green",
    "ffc40c" -> "Mikado yellow",
    "3eb489" -> "Mint",
    "f5fffa" -> "Mint cream",
    "98ff98" -> "Mint green",
    "ffe4e1" -> "Misty rose",
    "faebd7" -> "Moccasin",
    "967117" -> "Mode beige",
    "73a9c2" -> "Moonstone blue",
    "ae0c00" -> "Mordant red 19",
    "addfad" -> "Moss green",
    "30ba8f" -> "Mountain Meadow",
    "997a8d" -> "Mountbatten pink",
    "c54b8c" -> "Mulberry",
    "f2f3f4" -> "Munsell",
    "ffdb58" -> "Mustard",
    "21421e" -> "Myrtle",
    "f6adc6" -> "Nadeshiko pink",
    "2a8000" -> "Napier green",
    "fada5e" -> "Naples yellow",
    "ffdead" -> "Navajo white",
    "000080" -> "Navy blue",
    "ffa343" -> "Neon Carrot",
    "fe59c2" -> "Neon fuchsia",
    "39ff14" -> "Neon green",
    "059033" -> "North Texas Green",
    "0077be" -> "Ocean Boat Blue",
    "cc7722" -> "Ochre",
    "008000" -> "Office green",
    "cfb53b" -> "Old gold",
    "fdf5e6" -> "Old lace",
    "796878" -> "Old lavender",
    "673147" -> "Old mauve",
    "c08081" -> "Old rose",
    "808000" -> "Olive",
    "6b8e23" -> "Olive Drab",
    "bab86c" -> "Olive Green",
    "9ab973" -> "Olivine",
    "0f0f0f" -> "Onyx",
    "b784a7" -> "Opera mauve",
    "ffa500" -> "Orange",
    "f8d568" -> "Orange Yellow",
    "ff9f00" -> "Orange peel",
    "ff4500" -> "Orange red",
    "da70d6" -> "Orchid",
    "654321" -> "Otter brown",
    "414a4c" -> "Outer Space",
    "ff6e4a" -> "Outrageous Orange",
    "002147" -> "Oxford Blue",
    "1ca9c9" -> "Pacific Blue",
    "006600" -> "Pakistan green",
    "273be2" -> "Palatinate blue",
    "682860" -> "Palatinate purple",
    "bcd4e6" -> "Pale aqua",
    "afeeee" -> "Pale blue",
    "987654" -> "Pale brown",
    "af4035" -> "Pale carmine",
    "9bc4e2" -> "Pale cerulean",
    "ddadaf" -> "Pale chestnut",
    "da8a67" -> "Pale copper",
    "abcdef" -> "Pale cornflower blue",
    "e6be8a" -> "Pale gold",
    "eee8aa" -> "Pale goldenrod",
    "98fb98" -> "Pale green",
    "dcd0ff" -> "Pale lavender",
    "f984e5" -> "Pale magenta",
    "fadadd" -> "Pale pink",
    "dda0dd" -> "Pale plum",
    "db7093" -> "Pale red violet",
    "96ded1" -> "Pale robin egg blue",
    "c9c0bb" -> "Pale silver",
    "ecebbd" -> "Pale spring bud",
    "bc987e" -> "Pale taupe",
    "db7093" -> "Pale violet red",
    "78184a" -> "Pansy purple",
    "ffefd5" -> "Papaya whip",
    "50c878" -> "Paris Green",
    "aec6cf" -> "Pastel blue",
    "836953" -> "Pastel brown",
    "cfcfc4" -> "Pastel gray",
    "77dd77" -> "Pastel green",
    "f49ac2" -> "Pastel magenta",
    "ffb347" -> "Pastel orange",
    "ffd1dc" -> "Pastel pink",
    "b39eb5" -> "Pastel purple",
    "ff6961" -> "Pastel red",
    "cb99c9" -> "Pastel violet",
    "fdfd96" -> "Pastel yellow",
    "800080" -> "Patriarch",
    "536878" -> "Payne grey",
    "ffe5b4" -> "Peach",
    "ffdab9" -> "Peach puff",
    "fadfad" -> "Peach yellow",
    "d1e231" -> "Pear",
    "eae0c8" -> "Pearl",
    "88d8c0" -> "Pearl Aqua",
    "e6e200" -> "Peridot",
    "ccccff" -> "Periwinkle",
    "1c39bb" -> "Persian blue",
    "32127a" -> "Persian indigo",
    "d99058" -> "Persian orange",
    "f77fbe" -> "Persian pink",
    "701c1c" -> "Persian plum",
    "cc3333" -> "Persian red",
    "fe28a2" -> "Persian rose",
    "df00ff" -> "Phlox",
    "000f89" -> "Phthalo blue",
    "123524" -> "Phthalo green",
    "fddde6" -> "Piggy pink",
    "01796f" -> "Pine green",
    "ffc0cb" -> "Pink",
    "fc74fd" -> "Pink Flamingo",
    "f78fa7" -> "Pink Sherbet",
    "e7accf" -> "Pink pearl",
    "93c572" -> "Pistachio",
    "e5e4e2" -> "Platinum",
    "dda0dd" -> "Plum",
    "ff5a36" -> "Portland Orange",
    "b0e0e6" -> "Powder blue",
    "ff8f00" -> "Princeton orange",
    "003153" -> "Prussian blue",
    "df00ff" -> "Psychedelic purple",
    "cc8899" -> "Puce",
    "ff7518" -> "Pumpkin",
    "800080" -> "Purple",
    "69359c" -> "Purple Heart",
    "9678b6" -> "Purple mountain majesty",
    "fe4eda" -> "Purple pizzazz",
    "50404d" -> "Purple taupe",
    "5d8aa8" -> "Rackley",
    "ff355e" -> "Radical Red",
    "e30b5d" -> "Raspberry",
    "915f6d" -> "Raspberry glace",
    "e25098" -> "Raspberry pink",
    "b3446c" -> "Raspberry rose",
    "d68a59" -> "Raw Sienna",
    "ff33cc" -> "Razzle dazzle rose",
    "e3256b" -> "Razzmatazz",
    "ff0000" -> "Red",
    "ff5349" -> "Red Orange",
    "a52a2a" -> "Red brown",
    "c71585" -> "Red violet",
    "004040" -> "Rich black",
    "d70040" -> "Rich carmine",
    "0892d0" -> "Rich electric blue",
    "b666d2" -> "Rich lilac",
    "b03060" -> "Rich maroon",
    "414833" -> "Rifle green",
    "ff007f" -> "Rose",
    "f9429e" -> "Rose bonbon",
    "674846" -> "Rose ebony",
    "b76e79" -> "Rose gold",
    "e32636" -> "Rose madder",
    "ff66cc" -> "Rose pink",
    "aa98a9" -> "Rose quartz",
    "905d5d" -> "Rose taupe",
    "ab4e52" -> "Rose vale",
    "65000b" -> "Rosewood",
    "d40000" -> "Rosso corsa",
    "bc8f8f" -> "Rosy brown",
    "0038a8" -> "Royal azure",
    "4169e1" -> "Royal blue",
    "ca2c92" -> "Royal fuchsia",
    "7851a9" -> "Royal purple",
    "e0115f" -> "Ruby",
    "ff0028" -> "Ruddy",
    "bb6528" -> "Ruddy brown",
    "e18e96" -> "Ruddy pink",
    "a81c07" -> "Rufous",
    "80461b" -> "Russet",
    "b7410e" -> "Rust",
    "00563f" -> "Sacramento State green",
    "8b4513" -> "Saddle brown",
    "ff6700" -> "Safety orange",
    "f4c430" -> "Saffron",
    "23297a" -> "Saint Patrick Blue",
    "ff8c69" -> "Salmon",
    "ff91a4" -> "Salmon pink",
    "c2b280" -> "Sand",
    "967117" -> "Sand dune",
    "ecd540" -> "Sandstorm",
    "f4a460" -> "Sandy brown",
    "967117" -> "Sandy taupe",
    "507d2a" -> "Sap green",
    "0f52ba" -> "Sapphire",
    "cba135" -> "Satin sheen gold",
    "ff2400" -> "Scarlet",
    "ffd800" -> "School bus yellow",
    "76ff7a" -> "Screamin Green",
    "006994" -> "Sea blue",
    "2e8b57" -> "Sea green",
    "321414" -> "Seal brown",
    "fff5ee" -> "Seashell",
    "ffba00" -> "Selective yellow",
    "704214" -> "Sepia",
    "8a795d" -> "Shadow",
    "45cea2" -> "Shamrock",
    "009e60" -> "Shamrock green",
    "fc0fc0" -> "Shocking pink",
    "882d17" -> "Sienna",
    "c0c0c0" -> "Silver",
    "cb410b" -> "Sinopia",
    "007474" -> "Skobeloff",
    "87ceeb" -> "Sky blue",
    "cf71af" -> "Sky magenta",
    "6a5acd" -> "Slate blue",
    "708090" -> "Slate gray",
    "003399" -> "Smalt",
    "933d41" -> "Smokey topaz",
    "100c08" -> "Smoky black",
    "fffafa" -> "Snow",
    "0fc0fc" -> "Spiro Disco Ball",
    "a7fc00" -> "Spring bud",
    "00ff7f" -> "Spring green",
    "4682b4" -> "Steel blue",
    "fada5e" -> "Stil de grain yellow",
    "990000" -> "Stizza",
    "008080" -> "Stormcloud",
    "e4d96f" -> "Straw",
    "ffcc33" -> "Sunglow",
    "fad6a5" -> "Sunset",
    "fd5e53" -> "Sunset Orange",
    "d2b48c" -> "Tan",
    "f94d00" -> "Tangelo",
    "f28500" -> "Tangerine",
    "ffcc00" -> "Tangerine yellow",
    "483c32" -> "Taupe",
    "8b8589" -> "Taupe gray",
    "cd5700" -> "Tawny",
    "d0f0c0" -> "Tea green",
    "f4c2c2" -> "Tea rose",
    "008080" -> "Teal",
    "367588" -> "Teal blue",
    "006d5b" -> "Teal green",
    "e2725b" -> "Terra cotta",
    "d8bfd8" -> "Thistle",
    "de6fa1" -> "Thulian pink",
    "fc89ac" -> "Tickle Me Pink",
    "0abab5" -> "Tiffany Blue",
    "e08d3c" -> "Tiger eye",
    "dbd7d2" -> "Timberwolf",
    "eee600" -> "Titanium yellow",
    "ff6347" -> "Tomato",
    "746cc0" -> "Toolbox",
    "ffc87c" -> "Topaz",
    "fd0e35" -> "Tractor red",
    "808080" -> "Trolley Grey",
    "00755e" -> "Tropical rain forest",
    "0073cf" -> "True Blue",
    "417dc1" -> "Tufts Blue",
    "deaa88" -> "Tumbleweed",
    "b57281" -> "Turkish rose",
    "30d5c8" -> "Turquoise",
    "00ffef" -> "Turquoise blue",
    "a0d6b4" -> "Turquoise green",
    "66424d" -> "Tuscan red",
    "8a496b" -> "Twilight lavender",
    "66023c" -> "Tyrian purple",
    "0033aa" -> "UA blue",
    "d9004c" -> "UA red",
    "536895" -> "UCLA Blue",
    "ffb300" -> "UCLA Gold",
    "3cd070" -> "UFO Green",
    "014421" -> "UP Forest green",
    "7b1113" -> "UP Maroon",
    "990000" -> "USC Cardinal",
    "ffcc00" -> "USC Gold",
    "8878c3" -> "Ube",
    "ff6fff" -> "Ultra pink",
    "120a8f" -> "Ultramarine",
    "4166f5" -> "Ultramarine blue",
    "635147" -> "Umber",
    "5b92e5" -> "United Nations blue",
    "b78727" -> "University of California Gold",
    "ffff66" -> "Unmellow Yellow",
    "ae2029" -> "Upsdell red",
    "e1ad21" -> "Urobilin",
    "d3003f" -> "Utah Crimson",
    "f3e5ab" -> "Vanilla",
    "c5b358" -> "Vegas gold",
    "c80815" -> "Venetian red",
    "43b3ae" -> "Verdigris",
    "e34234" -> "Vermilion",
    "a020f0" -> "Veronica",
    "ee82ee" -> "Violet",
    "324ab2" -> "Violet Blue",
    "f75394" -> "Violet Red",
    "40826d" -> "Viridian",
    "922724" -> "Vivid auburn",
    "9f1d35" -> "Vivid burgundy",
    "da1d81" -> "Vivid cerise",
    "ffa089" -> "Vivid tangerine",
    "9f00ff" -> "Vivid violet",
    "004242" -> "Warm black",
    "00ffff" -> "Waterspout",
    "645452" -> "Wenge",
    "f5deb3" -> "Wheat",
    "ffffff" -> "White",
    "f5f5f5" -> "White smoke",
    "ff43a4" -> "Wild Strawberry",
    "fc6c85" -> "Wild Watermelon",
    "a2add0" -> "Wild blue yonder",
    "722f37" -> "Wine",
    "c9a0dc" -> "Wisteria",
    "738678" -> "Xanadu",
    "0f4d92" -> "Yale Blue",
    "ffff00" -> "Yellow",
    "ffae42" -> "Yellow Orange",
    "9acd32" -> "Yellow green",
    "0014a8" -> "Zaffre",
    "2c1608" -> "Zinnwaldite brown")
}

さて、私はそれを周りに置いていたので、ここではObjective-Cにあります：

- (NSString*)colorNameFromColor:(NSColor*)chosenColor
{
    NSColor*    calibratedColor = [chosenColor colorUsingColorSpaceName:NSCalibratedRGBColorSpace];

    CGFloat  hue;
    CGFloat  saturation;
    CGFloat  brightness;
    [calibratedColor getHue:&hue
                 saturation:&saturation
                 brightness:&brightness
                      alpha:nil];

    // I found that when the saturation was below 1% I couldn't tell
    // the color from gray
    if (saturation <= 0.01)
    {
        saturation = 0.0;
    }

    NSString*   colorName   = @"";

    // If saturation is 0.0, then this is a grayscale color
    if (saturation == 0.0)
    {
        if (brightness <= 0.2)
        {
            colorName = @"black";
        }
        else if (brightness > 0.95)
        {
            colorName = @"white";
        }
        else
        {
            colorName = @"gray";

            if (brightness < 0.33)
            {
                colorName = [@"dark " stringByAppendingString:colorName];
            }
            else if (brightness > 0.66)
            {
                colorName = [@"light " stringByAppendingString:colorName];
            }
        }
    }
    else
    {
        if ((hue <= 15.0 / 360.0) || (hue > 330.0 / 360.0))
        {
            colorName = @"red";
        }
        else if (hue < 45.0 / 360.0)
        {
            colorName = @"orange";
        }
        else if (hue < 70.0 / 360.0)
        {
            colorName = @"yellow";
        }
        else if (hue < 150.0 / 360.0)
        {
            colorName = @"green";
        }
        else if (hue < 190.0 / 360.0)
        {
            colorName = @"cyan";
        }
        else if (hue < 250.0 / 360.0)
        {
            colorName = @"blue";
        }
        else if (hue < 290.0 / 360.0)
        {
            colorName = @"purple";
        }
        else
        {
            colorName = @"magenta";
        }

        if (brightness < 0.5)
        {
            colorName = [@"dark " stringByAppendingString:colorName];
        } 
        else if (brightness > 0.8)
        {
            colorName = [@"bright " stringByAppendingString:colorName];
        }
    }

    return colorName;
}

ファロ・スモールトーク

これをPharoワークスペースに入れて印刷します。

| color colorNames nearestColorName |
color := Color r: 255 g: 0 b: 0 range: 255.
colorNames := Color registeredColorNames copyWithout: #transparent.
nearestColorName := colorNames detectMin: [ :each | (Color named: each) diff: color].

結果は混合品質です。すべての暗い色は次のように命名されている灰色、濃い灰色または非常に暗い灰色。おそらくColorのdiff:方法の方が良いでしょう。

非常に単純な視覚化のために：

((Morph newBounds: (0@0 extent: 200@200 ) color: color) addMorph: nearestColorName asMorph) openInWorld.

ここに記載されている（やや古風な）SAS V8カラー名に基づくSASマクロ：https : //v8doc.sas.com/sashtml/gref/zgscheme.htm#zrs-hues

サンプル入力：

%rgbname(100,100,50);

サンプル出力：

編集：はるかにコンパクトなバージョンで更新されました。

%macro rgbname(r,g,b);
data _null_;
    infile "C:\temp\colours.csv" dlm = ',' lrecl=32767 missover firstobs = 2 end = eof;
    format name description $32. rgb hls $8.;
    input name description rgb hls;
    R = input(substr(rgb,3,2),hex.);
    G = input(substr(rgb,5,2),hex.);
    B = input(substr(rgb,7,2),hex.);
    retain min_distance outdesc;
    distance = (r-&r)**2 + (g-&g)**2 + (b-&b)**2;
    min_distance = min(distance, min_distance);
    if distance = min_distance then outdesc = description;
    if eof then call symput("COLOUR_NAME", outdesc);
run;
dm log "postmessage ""You meant &COLOUR_NAME""" continue;
%mend rgbname;

XKCDバージョン-一番上の答えの露骨な切り抜きですが、ファイル名URLエンジンのちょっとしたデモであり、CSVを手動で準備する必要はありません。

%macro rgb_xkcd_name(r,g,b);
filename xkcd URL "http://bpaste.net/raw/402634/" debug;
data _null_;
    infile xkcd dlm = ',][' lrecl=32767 missover end = eof;
    format r g b 3. name $32.;
    input r g b name;
    retain min_distance outname;
    distance = (r-&r)**2 + (g-&g)**2 + (b-&b)**2;
    min_distance = min(distance, min_distance);
    if distance = min_distance then outname = name;
    if eof then do;
        call symput("COLOUR_NAME", outname);
        put _all_;
    end;
run;
dm log "postmessage ""XKCD thinks you meant &COLOUR_NAME""" continue;
%mend rgb_xkcd_name;

.NETのLinqとKnownColorsを使用したAC＃ソリューション

string GetColorName(int r, int g, int b){
    return Enum.GetValues(typeof(KnownColor))
        .OfType<KnownColor>()
        .Select(x => Color.FromKnownColor(x))
        .Select(x => new {Col = x, Offset = Math.Abs(r - x.R) + Math.Abs(g - x.G) + Math.Abs(b - x.B)})
        .OrderBy(x => x.Offset)
        .Select(x => x.Col)
        .First().Name;
}

Tcl

これはからX11色を参照しrgb.txtます。私のUbuntuでは/etc/X11/rgb.txtいくつかのシステムで知っていますが、入ってい/usr/lib/X11/rgb.txtます。rgb.txtX11を実行していない場合はGoogle をダウンロードしてください。

#! /usr/bin/env tclsh

set f [open /etc/X11/rgb.txt]
set raw [read $f]
close $f

set COLORS {}
foreach line [split $raw \n] {
    regexp {(\d+)\s+(\d+)\s+(\d+)\s+(.+)} $line -> r g b name
    if {[info exists name] && $name != ""} {
        lappend COLORS [format %02x%02x%02x $r $g $b] $name
    }
}

proc color_distance {a b} {
    set a [scan $a %2x%2x%2x]
    set b [scan $b %2x%2x%2x]
    set dist 0

    foreach x $a y $b {
        set dist [expr {$dist + (abs($x-$y)**2)}]
    }
    return $dist
}

proc identify {given_color} {
    global COLORS
    set d 0xffffff
    set n "not found"
    set c ""

    foreach {test_color name} $COLORS {
        set dist [color_distance $given_color $test_color]
        if {$dist < $d} {
            set d $dist
            set n $name
            set c $test_color
        }
    }

    return "$n ($c)"
}

puts [identify $argv]

コマンドライン引数としてカラーコードを渡します。

Python 2.6

UIの場合：

難読化（8,397バイト）：

exec("import re;import base64");exec((lambda p,y:(lambda o,b,f:re.sub(o,b,f))(r"([0-9a-f]+)",lambda m:p(m,y),base64.b64decode("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")))(lambda a,b:b[int("0x"+a.group(1),16)],"0|1|2|3|4|5|6|7|colorCanvas1|colorDifs|a|instructionsLabel|colorCanvas|canvasText1|create_rectangle|green|greenEntry|return|canvasText|value|numbers|colorName|16|color|pady|padx|redEntry|blue|Application|not|valid|root|20|hex_to_rgb|range|Those|lightgoldenrodyellow|red|colorlist|colors|blueLabel|green_dif|mediumspringgreen|__init__|redLabel|rectFill|mediumaquamarine|blue_dif|Entry|mediumslateblue|mediumvioletred|mediumturquoise|convert|lightsteelblue|darkolivegreen|cornflowerblue|lightslategrey|mediumseagreen|red_dif|blanchedalmond|darkturquoise|darkslateblue|lightseagreen|darkslategray|darkgoldenrod|paleturquoise|lavenderblush|palevioletred|text|palegoldenrod|height|submit|lightskyblue|darkseagreen|greenLabel|antiquewhite|lemonchiffon|master|midnightblue|in|mediumorchid|sticky|def|green1|int|mediumpurple|self|are|Canvas|forestgreen|greenyellow|lightyellow|saddlebrown|darkmagenta|navajowhite|yellowgreen|deepskyblue|floralwhite|lightsalmon|springgreen|sandybrown|grid|lightgreen|blueviolet|darkviolet|lightcoral|Frame|mediumblue|whitesmoke|blue1|darksalmon|aquamarine|papayawhip|width|darkorchid|darkorange|ValueError|dodgerblue|powderblue|ghostwhite|chartreuse|darkgreen|darkkhaki|cadetblue|chocolate|mistyrose|Converter|indianred|000080|02x|lightcyan|steelblue|firebrick|turquoise|abs|slategray|get|palegreen|limegreen|00008b|256|rosybrown|slateblue|olivedrab|peachpuff|lawngreen|burlywood|royalblue|goldenrod|aliceblue|str|orangered|lightgray|mintcream|lightpink|geometry|seagreen|seashell|lavender|lv|fill|mainloop|darkcyan|deeppink|darkgray|moccasin|darkblue|honeydew|red1|loop|cornsilk|thistle|hotpink|Convert|dimgrey|oldlace|crimson|darkred|magenta|command|460x180|skyblue|Tkinter|708090|00ff7f|fdf5e6|e6e6fa|dda0dd|da70d6|ffefd5|ba55d3|b22222|maroon|fff0f5|fff8dc|f5fffa|d8bfd8|ff7f50|cd853f|gainsboro|87ceeb|adff2f|98fb98|f08080|f0e68c|0000cd|import|ff69b4|bisque|ff00ff|7fffd4|d3d3d3|f8f8ff|008080|6a5acd|778899|d87093|7cfc00|e9967a|9370d8|808000|afeeee|f5f5dc|20b2aa|for|c0c0c0|d2b48c|2e8b57|f5f5f5|8b4513|66cdaa|ffa500|fafad2|7b68ee|c71585|6b8e23|orange|faf0e6|4169e1|40e0d0|lightblue|ffffff|8a2be2|add8e6|7fff00|ffa07a|006400|fffff0|fff5ee|8b0000|6495ed|9400d3|ffd700|dcdcdc|00ced1|0000ff|dc143c|except|008000|f0fff0|808080|440|ffff00|f4a460|32cd32|f0ffff|87cefa|9acd32|4682b4|fffaf0|daa520|ffffe0|RGB|00ff00|fa8072|ff1493|008b8b|fffafa|b8860b|ff8c00|ffc0cb|191970|ffb6c1|00ffff|sienna|d2691e|cd5c5c|00fa9a|a52a2a|if|faebd7|800080|deb887|purple|4b0082|556b2f|bc8f8f|ffe4e1|8b008b|3cb371|ffe4b5|ee82ee|f0f8ff|a0522d|silver|violet|ffebcd|483d8b|1e90ff|ff6347|f5deb3|00bfff|eee8aa|000000|orchid|9932cc|2f4f4f|8fbc8f|ffe4c4|48d1cc|5f9ea0|salmon|800000|ff0000|fffacd|ffdab9|lstrip|ffdead|yellow|460|b0c4de|ff4500|Button|228b22|e0ffff|a9a9a9|b0e0e6|90ee90|bdb76b|696969|tomato|indigo|black|wheat|ivory|colorLabel|items|beige|Green|khaki|brown|olive|Enter|tuple|class|Color|linen|title|white|azure|coral|plum|peru|aqua|lime|from|Blue|Name|gold|snow|grey|teal|navy|pink|keys|try|i|len|app|Red|column|The|min|tan|to|Tk|row|hexValue|is|W|blueEntry|columnspan|Label".split("|")))

難読化されていない（6,898バイト）：

from Tkinter import *
colorlist = {'#7cfc00': 'lawngreen', '#808080': 'grey', '#00008b': 'darkblue', '#ffe4b5': 'moccasin', '#fffff0': 'ivory', '#9400d3': 'darkviolet', '#b8860b': 'darkgoldenrod', '#fffaf0': 'floralwhite', '#8b008b': 'darkmagenta', '#fff5ee': 'seashell', '#ff8c00': 'darkorange', '#5f9ea0': 'cadetblue', '#2f4f4f': 'darkslategray', '#afeeee': 'paleturquoise', '#add8e6': 'lightblue', '#fffafa': 'snow', '#1e90ff': 'dodgerblue', '#000000': 'black', '#8fbc8f': 'darkseagreen', '#7fffd4': 'aquamarine', '#ffe4e1': 'mistyrose', '#800000': 'maroon', '#6495ed': 'cornflowerblue', '#4169e1': 'royalblue', '#40e0d0': 'turquoise', '#ffffff': 'white', '#00ced1': 'darkturquoise', '#8b0000': 'darkred', '#ee82ee': 'violet', '#adff2f': 'greenyellow', '#b0e0e6': 'powderblue', '#7b68ee': 'mediumslateblue', '#ff00ff': 'magenta', '#4682b4': 'steelblue', '#ff6347': 'tomato', '#00ff7f': 'springgreen', '#ffefd5': 'papayawhip', '#ffd700': 'gold', '#f5fffa': 'mintcream', '#dda0dd': 'plum', '#cd5c5c': 'indianred', '#ffa07a': 'lightsalmon', '#00fa9a': 'mediumspringgreen', '#f8f8ff': 'ghostwhite', '#008000': 'green', '#faebd7': 'antiquewhite', '#f0fff0': 'honeydew', '#c0c0c0': 'silver', '#228b22': 'forestgreen', '#7fff00': 'chartreuse', '#fafad2': 'lightgoldenrodyellow', '#fff8dc': 'cornsilk', '#f4a460': 'sandybrown', '#6b8e23': 'olivedrab', '#9932cc': 'darkorchid', '#fdf5e6': 'oldlace', '#3cb371': 'mediumseagreen', '#d8bfd8': 'thistle', '#808000': 'olive', '#a9a9a9': 'darkgray', '#f5f5dc': 'beige', '#f5deb3': 'wheat', '#ffa500': 'orange', '#00ff00': 'lime', '#90ee90': 'lightgreen', '#a0522d': 'sienna', '#8b4513': 'saddlebrown', '#00ffff': 'aqua', '#4b0082': 'indigo', '#66cdaa': 'mediumaquamarine', '#b22222': 'firebrick', '#d2b48c': 'tan', '#ffebcd': 'blanchedalmond', '#0000ff': 'blue', '#da70d6': 'orchid', '#fffacd': 'lemonchiffon', '#ff7f50': 'coral', '#f5f5f5': 'whitesmoke', '#ffc0cb': 'pink', '#f0e68c': 'khaki', '#ffffe0': 'lightyellow', '#f0ffff': 'azure', '#f0f8ff': 'aliceblue', '#daa520': 'goldenrod', '#c71585': 'mediumvioletred', '#b0c4de': 'lightsteelblue', '#fa8072': 'salmon', '#708090': 'slategray', '#ff1493': 'deeppink', '#6a5acd': 'slateblue', '#2e8b57': 'seagreen', '#e9967a': 'darksalmon', '#778899': 'lightslategrey', '#ba55d3': 'mediumorchid', '#ff4500': 'orangered', '#a52a2a': 'brown', '#696969': 'dimgrey', '#191970': 'midnightblue', '#dc143c': 'crimson', '#bdb76b': 'darkkhaki', '#ffff00': 'yellow', '#d87093': 'palevioletred', '#556b2f': 'darkolivegreen', '#9370d8': 'mediumpurple', '#eee8aa': 'palegoldenrod', '#cd853f': 'peru', '#faf0e6': 'linen', '#bc8f8f': 'rosybrown', '#d2691e': 'chocolate', '#008080': 'teal', '#98fb98': 'palegreen', '#ff69b4': 'hotpink', '#e0ffff': 'lightcyan', '#87cefa': 'lightskyblue', '#ffdead': 'navajowhite', '#483d8b': 'darkslateblue', '#32cd32': 'limegreen', '#e6e6fa': 'lavender', '#800080': 'purple', '#d3d3d3': 'lightgray', '#006400': 'darkgreen', '#0000cd': 'mediumblue', '#00bfff': 'deepskyblue', '#ffe4c4': 'bisque', '#48d1cc': 'mediumturquoise', '#008b8b': 'darkcyan', '#9acd32': 'yellowgreen', '#f08080': 'lightcoral', '#ff0000': 'red', '#deb887': 'burlywood', '#ffb6c1': 'lightpink', '#20b2aa': 'lightseagreen', '#87ceeb': 'skyblue', '#fff0f5': 'lavenderblush', '#8a2be2': 'blueviolet', '#000080': 'navy', '#dcdcdc': 'gainsboro', '#ffdab9': 'peachpuff'}

def hex_to_rgb(value):
    value = value.lstrip('#')
    lv = len(value)
    return tuple(int(value[i:i+lv/3], 16) for i in range(0, lv, lv/3))

class Application(Frame):

    def __init__(self, master):
        Frame.__init__(self, master)
        self.grid()
        self.loop()

    def loop(self):
        self.instructionsLabel = Label(self, text = "Enter in a RGB value.")
        self.instructionsLabel.grid(row = 1, column = 0, columnspan = 3)

        self.redLabel = Label(self, text = "Red")
        self.redLabel.grid(row = 2, column = 0, padx = 5, pady = 5)
        self.redEntry = Entry(self)
        self.redEntry.grid(row = 3, column = 0, padx = 5, pady = 5)

        self.greenLabel = Label(self, text = "Green")
        self.greenLabel.grid(row = 2, column = 1, padx = 5, pady = 5)
        self.greenEntry = Entry(self)
        self.greenEntry.grid(row = 3, column = 1, padx = 5, pady = 5)

        self.blueLabel = Label(self, text = "Blue")
        self.blueLabel.grid(row = 2, column = 2, padx = 5, pady = 5)
        self.blueEntry = Entry(self)
        self.blueEntry.grid(row = 3, column = 2, padx = 5, pady = 5)

        self.submit = Button(self, text = "Convert", command = self.convert)
        self.submit.grid(row = 4, column = 0, columnspan = 3)

        self.colorLabel = Label(self)
        self.colorLabel.grid(row = 5, column = 0, columnspan = 3)

        self.colorCanvas = Canvas(self, width = 460, height = 20)
        self.colorCanvas.grid(row = 6, column = 0, columnspan = 3)

        self.canvasText = Label(self)
        self.canvasText.grid(row = 6, column = 0, sticky = W)

        self.colorCanvas1 = Canvas(self, width = 460, height = 20)
        self.colorCanvas1.grid(row = 7, column = 0, columnspan = 3)

        self.canvasText1 = Label(self)
        self.canvasText1.grid(row = 7, column = 0, sticky = W)

    def convert(self):
        try:
            red = int(self.redEntry.get())
            green = int(self.greenEntry.get())
            blue = int(self.blueEntry.get())
        except ValueError:
            self.colorLabel["text"] = "Those are not valid numbers."
            return

        if red not in range(256):
            self.colorLabel["text"] = "Those are not valid numbers."
            return
        if green not in range(256):
            self.colorLabel["text"] = "Those are not valid numbers."
            return
        if blue not in range(256):
            self.colorLabel["text"] = "Those are not valid numbers."
            return

        colorDifs = {}
        colors = {}
        for hexValue, colorName in colorlist.items():
            colors[colorName] = hexValue
            red1, green1, blue1 = hex_to_rgb(hexValue)
            red_dif = abs(red1 - red)
            green_dif = abs(green1 - green)
            blue_dif = abs(blue1 - blue)
            colorDifs[red_dif + green_dif + blue_dif] = colorName
        color = colorDifs[min(colorDifs.keys())];

        hexValue = colors[color]

        rectFill = '#%02x%02x%02x' % (red, green, blue)

        self.colorLabel["text"] = "The color is " +  color
        self.canvasText["text"] = "(" + str(red) + ", " + str(green) + ", " + str(blue) + ")"
        self.canvasText1["text"] = color
        self.colorCanvas.create_rectangle(20, 0, 440, 20, fill = rectFill)
        self.colorCanvas1.create_rectangle(20, 0, 440, 20, fill = hexValue)

root = Tk()
root.title("RGB to Color Name Converter")
root.geometry("460x180")
app = Application(root)

root.mainloop()

UIなし：

難読化（6,543バイト）：

exec("import re;import base64");exec((lambda p,y:(lambda o,b,f:re.sub(o,b,f))(r"([0-9a-f]+)",lambda m:p(m,y),base64.b64decode("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")))(lambda a,b:b[int("0x"+a.group(1),16)],"000000|1|2|3|colorName|blue|rgbValue|value|again|ValueError|red|try|print|colors|int|range|hex_to_rgb|while|lightgoldenrodyellow|colorlist|except|green_dif|16|blue_dif|mediumaquamarine|True|hexValue|color|mediumvioletred|mediumslateblue|break|mediumturquoise|red_dif|cornflowerblue|darkolivegreen|mediumseagreen|lightslategrey|lightsteelblue|blanchedalmond|palevioletred|lavenderblush|darkgoldenrod|paleturquoise|lightseagreen|darkslategray|darkslateblue|darkturquoise|palegoldenrod|midnightblue|mediumpurple|return|else|antiquewhite|lightskyblue|darkseagreen|mediumorchid|lemonchiffon|forestgreen|navajowhite|greenyellow|lightyellow|floralwhite|yellowgreen|lightsalmon|saddlebrown|darkmagenta|deepskyblue|springgreen|lightcoral|sandybrown|lightgreen|darkorange|aquamarine|dodgerblue|darksalmon|powderblue|blueviolet|in|mediumblue|n|papayawhip|whitesmoke|ghostwhite|darkorchid|chartreuse|darkviolet|darkgreen|lawngreen|steelblue|olivedrab|limegreen|royalblue|darkkhaki|cadetblue|mintcream|gainsboro|rosybrown|slateblue|not|chocolate|firebrick|mistyrose|goldenrod|turquoise|aliceblue|abs|burlywood|slategray|indianred|orangered|256|lightgray|lightblue|peachpuff|palegreen|lightcyan|lightpink|moccasin|honeydew|seashell|lavender|darkblue|seagreen|lv|deeppink|continue|cornsilk|darkgray|000080|darkred|thistle|hotpink|magenta|dimgrey|oldlace|skyblue|crimson|483d8b|darkcyan|00008b|1e90ff|ff6347|eee8aa|c0c0c0|fffaf0|4682b4|d2b48c|dda0dd|ff4500|00ff7f|da70d6|ffffe0|f5f5f5|daa520|ffefd5|008b8b|66cdaa|fffafa|ffa500|b22222|e9967a|raw_input|orchid|b8860b|f08080|maroon|Please|fff0f5|fafad2|7b68ee|e6e6fa|9932cc|fff8dc|c71585|ffc0cb|e0ffff|191970|2f4f4f|8fbc8f|6b8e23|orange|fdf5e6|f5fffa|ffb6c1|00ffff|faf0e6|fa8072|4169e1|sienna|d2691e|d8bfd8|cd5c5c|ff7f50|708090|48d1cc|00fa9a|a52a2a|ffe4c4|9400d3|ffffff|f0f8ff|ba55d3|cd853f|8b4513|add8e6|0000cd|7fff00|faebd7|9acd32|87ceeb|rgb|ffd700|deb887|adff2f|98fb98|purple|fffff0|2e8b57|fff5ee|salmon|800000|f5deb3|8b0000|a0522d|fffacd|ff1493|6495ed|ffdab9|5f9ea0|if|dcdcdc|f0e68c|556b2f|lstrip|bc8f8f|a9a9a9|778899|006400|ffdead|yellow|ffe4e1|for|bisque|8b008b|b0c4de|ff00ff|00ced1|00ff00|3cb371|ffa07a|8a2be2|7fffd4|ffe4b5|228b22|bdb76b|0000ff|d3d3d3|ee82ee|ff8c00|f8f8ff|dc143c|ff69b4|4b0082|800080|008080|b0e0e6|6a5acd|ff0000|87cefa|d87093|90ee90|7cfc00|008000|9370d8|00bfff|808000|20b2aa|afeeee|f0fff0|696969|808080|silver|tomato|ffff00|violet|f4a460|indigo|ffebcd|32cd32|def|f5f5dc|f0ffff|40e0d0|khaki|ivory|linen|input|black|white|beige|ENTER|brown|olive|Press|GREEN|azure|items|wheat|tuple|coral|aqua|lime|grey|teal|plum|gold|peru|keys|snow|navy|pink|BLUE|RGB|The|the|min|i|RED|tan|len|is|INVALID|0|to|mediumspringgreen|green|nPlease".split("|")))

難読化されていない（5,050バイト）：

colorlist = {'#7cfc00': 'lawngreen', '#808080': 'grey', '#00008b': 'darkblue', '#ffe4b5': 'moccasin', '#fffff0': 'ivory', '#9400d3': 'darkviolet', '#b8860b': 'darkgoldenrod', '#fffaf0': 'floralwhite', '#8b008b': 'darkmagenta', '#fff5ee': 'seashell', '#ff8c00': 'darkorange', '#5f9ea0': 'cadetblue', '#2f4f4f': 'darkslategray', '#afeeee': 'paleturquoise', '#add8e6': 'lightblue', '#fffafa': 'snow', '#1e90ff': 'dodgerblue', '#000000': 'black', '#8fbc8f': 'darkseagreen', '#7fffd4': 'aquamarine', '#ffe4e1': 'mistyrose', '#800000': 'maroon', '#6495ed': 'cornflowerblue', '#4169e1': 'royalblue', '#40e0d0': 'turquoise', '#ffffff': 'white', '#00ced1': 'darkturquoise', '#8b0000': 'darkred', '#ee82ee': 'violet', '#adff2f': 'greenyellow', '#b0e0e6': 'powderblue', '#7b68ee': 'mediumslateblue', '#ff00ff': 'magenta', '#4682b4': 'steelblue', '#ff6347': 'tomato', '#00ff7f': 'springgreen', '#ffefd5': 'papayawhip', '#ffd700': 'gold', '#f5fffa': 'mintcream', '#dda0dd': 'plum', '#cd5c5c': 'indianred', '#ffa07a': 'lightsalmon', '#00fa9a': 'mediumspringgreen', '#f8f8ff': 'ghostwhite', '#008000': 'green', '#faebd7': 'antiquewhite', '#f0fff0': 'honeydew', '#c0c0c0': 'silver', '#228b22': 'forestgreen', '#7fff00': 'chartreuse', '#fafad2': 'lightgoldenrodyellow', '#fff8dc': 'cornsilk', '#f4a460': 'sandybrown', '#6b8e23': 'olivedrab', '#9932cc': 'darkorchid', '#fdf5e6': 'oldlace', '#3cb371': 'mediumseagreen', '#d8bfd8': 'thistle', '#808000': 'olive', '#a9a9a9': 'darkgray', '#f5f5dc': 'beige', '#f5deb3': 'wheat', '#ffa500': 'orange', '#00ff00': 'lime', '#90ee90': 'lightgreen', '#a0522d': 'sienna', '#8b4513': 'saddlebrown', '#00ffff': 'aqua', '#4b0082': 'indigo', '#66cdaa': 'mediumaquamarine', '#b22222': 'firebrick', '#d2b48c': 'tan', '#ffebcd': 'blanchedalmond', '#0000ff': 'blue', '#da70d6': 'orchid', '#fffacd': 'lemonchiffon', '#ff7f50': 'coral', '#f5f5f5': 'whitesmoke', '#ffc0cb': 'pink', '#f0e68c': 'khaki', '#ffffe0': 'lightyellow', '#f0ffff': 'azure', '#f0f8ff': 'aliceblue', '#daa520': 'goldenrod', '#c71585': 'mediumvioletred', '#b0c4de': 'lightsteelblue', '#fa8072': 'salmon', '#708090': 'slategray', '#ff1493': 'deeppink', '#6a5acd': 'slateblue', '#2e8b57': 'seagreen', '#e9967a': 'darksalmon', '#778899': 'lightslategrey', '#ba55d3': 'mediumorchid', '#ff4500': 'orangered', '#a52a2a': 'brown', '#696969': 'dimgrey', '#191970': 'midnightblue', '#dc143c': 'crimson', '#bdb76b': 'darkkhaki', '#ffff00': 'yellow', '#d87093': 'palevioletred', '#556b2f': 'darkolivegreen', '#9370d8': 'mediumpurple', '#eee8aa': 'palegoldenrod', '#cd853f': 'peru', '#faf0e6': 'linen', '#bc8f8f': 'rosybrown', '#d2691e': 'chocolate', '#008080': 'teal', '#98fb98': 'palegreen', '#ff69b4': 'hotpink', '#e0ffff': 'lightcyan', '#87cefa': 'lightskyblue', '#ffdead': 'navajowhite', '#483d8b': 'darkslateblue', '#32cd32': 'limegreen', '#e6e6fa': 'lavender', '#800080': 'purple', '#d3d3d3': 'lightgray', '#006400': 'darkgreen', '#0000cd': 'mediumblue', '#00bfff': 'deepskyblue', '#ffe4c4': 'bisque', '#48d1cc': 'mediumturquoise', '#008b8b': 'darkcyan', '#9acd32': 'yellowgreen', '#f08080': 'lightcoral', '#ff0000': 'red', '#deb887': 'burlywood', '#ffb6c1': 'lightpink', '#20b2aa': 'lightseagreen', '#87ceeb': 'skyblue', '#fff0f5': 'lavenderblush', '#8a2be2': 'blueviolet', '#000080': 'navy', '#dcdcdc': 'gainsboro', '#ffdab9': 'peachpuff'}
def hex_to_rgb(value):
    value = value.lstrip('#')
    lv = len(value)
    return tuple(int(value[i:i+lv/3], 16) for i in range(0, lv, lv/3))

def color(rgbValue):
    colors = {};
    for hexValue, colorName in colorlist.items():
        red, green, blue = hex_to_rgb(hexValue);
        red_dif = abs(red - rgbValue[0]);
        green_dif = abs(green - rgbValue[1])
        blue_dif = abs(blue - rgbValue[2])
        colors[red_dif + green_dif + blue_dif] = colorName
    return colors[min(colors.keys())];

while True:

    print "Please input the RGB value.";
    raw_input("--Press ENTER to continue--\n> ");

    red, green, blue = "", "", "";
    red = raw_input("RED\n> ");
    while True:
        try:
            if int(red) not in range(256):
                red = raw_input("--INVALID--\nPlease try again\n> ");
            else:
                break;
        except ValueError:
            red = raw_input("--INVALID--\nPlease try again\n> ");

    green = raw_input("GREEN\n> ");
    while True:
        try:
            if int(green) not in range(256):
                green = raw_input("--INVALID--\nPlease try again\n> ");
            else:
                break;
        except ValueError:
            green = raw_input("--INVALID--\nPlease try again\n> ");

    blue = raw_input("BLUE\n> ");
    while True:
        try:
            if int(blue) not in range(256):
                blue = raw_input("--INVALID--\nPlease try again\n> ");
            else:
                break;
        except ValueError:
            blue = raw_input("--INVALID--\nPlease try again\n> ");

    rgb = (int(red), int(green), int(blue));
    colorName = color(rgb);

    print "The color is", colorName;
    print
    print
    print

Javascript

https://jsfiddle.net/SuperJedi224/goxyhm7a/

いくつかのサンプル結果[7月31日現在]（リストされている色は、順番に、最も近いと判断されたものと、2番目に近いと判断されたものです。完全に一致）：

ブライトネイビーブルー/スチールブルー

ブロンズ/タンイエローオレンジ

トパーズ/ナシ

スライムグリーン/オリーブグリーン

ヴィリジアン/エメラルド

VB.net

Function ColorName(r AS Integer, g As Integer, b As Integer)As String
  Dim nc = Color.FromArgb(255, r, g, b)
  For Each ob In [Enum].GetValues(GetType(System.Drawing.KnownColor))
    Dim c = Color.FromKnownColor(CType(ob, System.Drawing.KnownColor))
    If (c.R = nc.R) AndAlso (c.B = nc.B) AndAlso (c.G = nc.G) Then Return c.Name
  Next
  Return nc.Name
End Function