How can I convert a color in RGB format into a color name?

如何将RGB格式的颜色转换为颜色名称？

Examples:

例如：

• (0, 0, 255) -> "blue"


• (255, 0, 0) -> "red"


• (128, 128, 128) -> "grey"

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Here is a working sample code that does that. It converts an rgb/hex value/awt color into the closest color name.

以下是实现这一点的工作样例代码。它将RGB/十六进制值/AWT颜色转换为最接近的颜色名称。

import java.awt.Color;
import java.util.ArrayList;

/**
 * Java Code to get a color name from rgb/hex value/awt color
 * 
 * The part of looking up a color name from the rgb values is edited from
 * https://gist.github.com/nightlark/6482130#file-gistfile1-java (that has some errors) by Ryan Mast (nightlark)
 * 
 * @author Xiaoxiao Li
 * 
 */
public class ColorUtils {

    /**
     * Initialize the color list that we have.
     */
    private ArrayList<ColorName> initColorList() {
        ArrayList<ColorName> colorList = new ArrayList<ColorName>();
        colorList.add(new ColorName("AliceBlue", 0xF0, 0xF8, 0xFF));
        colorList.add(new ColorName("AntiqueWhite", 0xFA, 0xEB, 0xD7));
        colorList.add(new ColorName("Aqua", 0x00, 0xFF, 0xFF));
        colorList.add(new ColorName("Aquamarine", 0x7F, 0xFF, 0xD4));
        colorList.add(new ColorName("Azure", 0xF0, 0xFF, 0xFF));
        colorList.add(new ColorName("Beige", 0xF5, 0xF5, 0xDC));
        colorList.add(new ColorName("Bisque", 0xFF, 0xE4, 0xC4));
        colorList.add(new ColorName("Black", 0x00, 0x00, 0x00));
        colorList.add(new ColorName("BlanchedAlmond", 0xFF, 0xEB, 0xCD));
        colorList.add(new ColorName("Blue", 0x00, 0x00, 0xFF));
        colorList.add(new ColorName("BlueViolet", 0x8A, 0x2B, 0xE2));
        colorList.add(new ColorName("Brown", 0xA5, 0x2A, 0x2A));
        colorList.add(new ColorName("BurlyWood", 0xDE, 0xB8, 0x87));
        colorList.add(new ColorName("CadetBlue", 0x5F, 0x9E, 0xA0));
        colorList.add(new ColorName("Chartreuse", 0x7F, 0xFF, 0x00));
        colorList.add(new ColorName("Chocolate", 0xD2, 0x69, 0x1E));
        colorList.add(new ColorName("Coral", 0xFF, 0x7F, 0x50));
        colorList.add(new ColorName("CornflowerBlue", 0x64, 0x95, 0xED));
        colorList.add(new ColorName("Cornsilk", 0xFF, 0xF8, 0xDC));
        colorList.add(new ColorName("Crimson", 0xDC, 0x14, 0x3C));
        colorList.add(new ColorName("Cyan", 0x00, 0xFF, 0xFF));
        colorList.add(new ColorName("DarkBlue", 0x00, 0x00, 0x8B));
        colorList.add(new ColorName("DarkCyan", 0x00, 0x8B, 0x8B));
        colorList.add(new ColorName("DarkGoldenRod", 0xB8, 0x86, 0x0B));
        colorList.add(new ColorName("DarkGray", 0xA9, 0xA9, 0xA9));
        colorList.add(new ColorName("DarkGreen", 0x00, 0x64, 0x00));
        colorList.add(new ColorName("DarkKhaki", 0xBD, 0xB7, 0x6B));
        colorList.add(new ColorName("DarkMagenta", 0x8B, 0x00, 0x8B));
        colorList.add(new ColorName("DarkOliveGreen", 0x55, 0x6B, 0x2F));
        colorList.add(new ColorName("DarkOrange", 0xFF, 0x8C, 0x00));
        colorList.add(new ColorName("DarkOrchid", 0x99, 0x32, 0xCC));
        colorList.add(new ColorName("DarkRed", 0x8B, 0x00, 0x00));
        colorList.add(new ColorName("DarkSalmon", 0xE9, 0x96, 0x7A));
        colorList.add(new ColorName("DarkSeaGreen", 0x8F, 0xBC, 0x8F));
        colorList.add(new ColorName("DarkSlateBlue", 0x48, 0x3D, 0x8B));
        colorList.add(new ColorName("DarkSlateGray", 0x2F, 0x4F, 0x4F));
        colorList.add(new ColorName("DarkTurquoise", 0x00, 0xCE, 0xD1));
        colorList.add(new ColorName("DarkViolet", 0x94, 0x00, 0xD3));
        colorList.add(new ColorName("DeepPink", 0xFF, 0x14, 0x93));
        colorList.add(new ColorName("DeepSkyBlue", 0x00, 0xBF, 0xFF));
        colorList.add(new ColorName("DimGray", 0x69, 0x69, 0x69));
        colorList.add(new ColorName("DodgerBlue", 0x1E, 0x90, 0xFF));
        colorList.add(new ColorName("FireBrick", 0xB2, 0x22, 0x22));
        colorList.add(new ColorName("FloralWhite", 0xFF, 0xFA, 0xF0));
        colorList.add(new ColorName("ForestGreen", 0x22, 0x8B, 0x22));
        colorList.add(new ColorName("Fuchsia", 0xFF, 0x00, 0xFF));
        colorList.add(new ColorName("Gainsboro", 0xDC, 0xDC, 0xDC));
        colorList.add(new ColorName("GhostWhite", 0xF8, 0xF8, 0xFF));
        colorList.add(new ColorName("Gold", 0xFF, 0xD7, 0x00));
        colorList.add(new ColorName("GoldenRod", 0xDA, 0xA5, 0x20));
        colorList.add(new ColorName("Gray", 0x80, 0x80, 0x80));
        colorList.add(new ColorName("Green", 0x00, 0x80, 0x00));
        colorList.add(new ColorName("GreenYellow", 0xAD, 0xFF, 0x2F));
        colorList.add(new ColorName("HoneyDew", 0xF0, 0xFF, 0xF0));
        colorList.add(new ColorName("HotPink", 0xFF, 0x69, 0xB4));
        colorList.add(new ColorName("IndianRed", 0xCD, 0x5C, 0x5C));
        colorList.add(new ColorName("Indigo", 0x4B, 0x00, 0x82));
        colorList.add(new ColorName("Ivory", 0xFF, 0xFF, 0xF0));
        colorList.add(new ColorName("Khaki", 0xF0, 0xE6, 0x8C));
        colorList.add(new ColorName("Lavender", 0xE6, 0xE6, 0xFA));
        colorList.add(new ColorName("LavenderBlush", 0xFF, 0xF0, 0xF5));
        colorList.add(new ColorName("LawnGreen", 0x7C, 0xFC, 0x00));
        colorList.add(new ColorName("LemonChiffon", 0xFF, 0xFA, 0xCD));
        colorList.add(new ColorName("LightBlue", 0xAD, 0xD8, 0xE6));
        colorList.add(new ColorName("LightCoral", 0xF0, 0x80, 0x80));
        colorList.add(new ColorName("LightCyan", 0xE0, 0xFF, 0xFF));
        colorList.add(new ColorName("LightGoldenRodYellow", 0xFA, 0xFA, 0xD2));
        colorList.add(new ColorName("LightGray", 0xD3, 0xD3, 0xD3));
        colorList.add(new ColorName("LightGreen", 0x90, 0xEE, 0x90));
        colorList.add(new ColorName("LightPink", 0xFF, 0xB6, 0xC1));
        colorList.add(new ColorName("LightSalmon", 0xFF, 0xA0, 0x7A));
        colorList.add(new ColorName("LightSeaGreen", 0x20, 0xB2, 0xAA));
        colorList.add(new ColorName("LightSkyBlue", 0x87, 0xCE, 0xFA));
        colorList.add(new ColorName("LightSlateGray", 0x77, 0x88, 0x99));
        colorList.add(new ColorName("LightSteelBlue", 0xB0, 0xC4, 0xDE));
        colorList.add(new ColorName("LightYellow", 0xFF, 0xFF, 0xE0));
        colorList.add(new ColorName("Lime", 0x00, 0xFF, 0x00));
        colorList.add(new ColorName("LimeGreen", 0x32, 0xCD, 0x32));
        colorList.add(new ColorName("Linen", 0xFA, 0xF0, 0xE6));
        colorList.add(new ColorName("Magenta", 0xFF, 0x00, 0xFF));
        colorList.add(new ColorName("Maroon", 0x80, 0x00, 0x00));
        colorList.add(new ColorName("MediumAquaMarine", 0x66, 0xCD, 0xAA));
        colorList.add(new ColorName("MediumBlue", 0x00, 0x00, 0xCD));
        colorList.add(new ColorName("MediumOrchid", 0xBA, 0x55, 0xD3));
        colorList.add(new ColorName("MediumPurple", 0x93, 0x70, 0xDB));
        colorList.add(new ColorName("MediumSeaGreen", 0x3C, 0xB3, 0x71));
        colorList.add(new ColorName("MediumSlateBlue", 0x7B, 0x68, 0xEE));
        colorList.add(new ColorName("MediumSpringGreen", 0x00, 0xFA, 0x9A));
        colorList.add(new ColorName("MediumTurquoise", 0x48, 0xD1, 0xCC));
        colorList.add(new ColorName("MediumVioletRed", 0xC7, 0x15, 0x85));
        colorList.add(new ColorName("MidnightBlue", 0x19, 0x19, 0x70));
        colorList.add(new ColorName("MintCream", 0xF5, 0xFF, 0xFA));
        colorList.add(new ColorName("MistyRose", 0xFF, 0xE4, 0xE1));
        colorList.add(new ColorName("Moccasin", 0xFF, 0xE4, 0xB5));
        colorList.add(new ColorName("NavajoWhite", 0xFF, 0xDE, 0xAD));
        colorList.add(new ColorName("Navy", 0x00, 0x00, 0x80));
        colorList.add(new ColorName("OldLace", 0xFD, 0xF5, 0xE6));
        colorList.add(new ColorName("Olive", 0x80, 0x80, 0x00));
        colorList.add(new ColorName("OliveDrab", 0x6B, 0x8E, 0x23));
        colorList.add(new ColorName("Orange", 0xFF, 0xA5, 0x00));
        colorList.add(new ColorName("OrangeRed", 0xFF, 0x45, 0x00));
        colorList.add(new ColorName("Orchid", 0xDA, 0x70, 0xD6));
        colorList.add(new ColorName("PaleGoldenRod", 0xEE, 0xE8, 0xAA));
        colorList.add(new ColorName("PaleGreen", 0x98, 0xFB, 0x98));
        colorList.add(new ColorName("PaleTurquoise", 0xAF, 0xEE, 0xEE));
        colorList.add(new ColorName("PaleVioletRed", 0xDB, 0x70, 0x93));
        colorList.add(new ColorName("PapayaWhip", 0xFF, 0xEF, 0xD5));
        colorList.add(new ColorName("PeachPuff", 0xFF, 0xDA, 0xB9));
        colorList.add(new ColorName("Peru", 0xCD, 0x85, 0x3F));
        colorList.add(new ColorName("Pink", 0xFF, 0xC0, 0xCB));
        colorList.add(new ColorName("Plum", 0xDD, 0xA0, 0xDD));
        colorList.add(new ColorName("PowderBlue", 0xB0, 0xE0, 0xE6));
        colorList.add(new ColorName("Purple", 0x80, 0x00, 0x80));
        colorList.add(new ColorName("Red", 0xFF, 0x00, 0x00));
        colorList.add(new ColorName("RosyBrown", 0xBC, 0x8F, 0x8F));
        colorList.add(new ColorName("RoyalBlue", 0x41, 0x69, 0xE1));
        colorList.add(new ColorName("SaddleBrown", 0x8B, 0x45, 0x13));
        colorList.add(new ColorName("Salmon", 0xFA, 0x80, 0x72));
        colorList.add(new ColorName("SandyBrown", 0xF4, 0xA4, 0x60));
        colorList.add(new ColorName("SeaGreen", 0x2E, 0x8B, 0x57));
        colorList.add(new ColorName("SeaShell", 0xFF, 0xF5, 0xEE));
        colorList.add(new ColorName("Sienna", 0xA0, 0x52, 0x2D));
        colorList.add(new ColorName("Silver", 0xC0, 0xC0, 0xC0));
        colorList.add(new ColorName("SkyBlue", 0x87, 0xCE, 0xEB));
        colorList.add(new ColorName("SlateBlue", 0x6A, 0x5A, 0xCD));
        colorList.add(new ColorName("SlateGray", 0x70, 0x80, 0x90));
        colorList.add(new ColorName("Snow", 0xFF, 0xFA, 0xFA));
        colorList.add(new ColorName("SpringGreen", 0x00, 0xFF, 0x7F));
        colorList.add(new ColorName("SteelBlue", 0x46, 0x82, 0xB4));
        colorList.add(new ColorName("Tan", 0xD2, 0xB4, 0x8C));
        colorList.add(new ColorName("Teal", 0x00, 0x80, 0x80));
        colorList.add(new ColorName("Thistle", 0xD8, 0xBF, 0xD8));
        colorList.add(new ColorName("Tomato", 0xFF, 0x63, 0x47));
        colorList.add(new ColorName("Turquoise", 0x40, 0xE0, 0xD0));
        colorList.add(new ColorName("Violet", 0xEE, 0x82, 0xEE));
        colorList.add(new ColorName("Wheat", 0xF5, 0xDE, 0xB3));
        colorList.add(new ColorName("White", 0xFF, 0xFF, 0xFF));
        colorList.add(new ColorName("WhiteSmoke", 0xF5, 0xF5, 0xF5));
        colorList.add(new ColorName("Yellow", 0xFF, 0xFF, 0x00));
        colorList.add(new ColorName("YellowGreen", 0x9A, 0xCD, 0x32));
        return colorList;
    }

    /**
     * Get the closest color name from our list
     * 
     * @param r
     * @param g
     * @param b
     * @return
     */
    public String getColorNameFromRgb(int r, int g, int b) {
        ArrayList<ColorName> colorList = initColorList();
        ColorName closestMatch = null;
        int minMSE = Integer.MAX_VALUE;
        int mse;
        for (ColorName c : colorList) {
            mse = c.computeMSE(r, g, b);
            if (mse < minMSE) {
                minMSE = mse;
                closestMatch = c;
            }
        }

        if (closestMatch != null) {
            return closestMatch.getName();
        } else {
            return "No matched color name.";
        }
    }

    /**
     * Convert hexColor to rgb, then call getColorNameFromRgb(r, g, b)
     * 
     * @param hexColor
     * @return
     */
    public String getColorNameFromHex(int hexColor) {
        int r = (hexColor & 0xFF0000) >> 16;
        int g = (hexColor & 0xFF00) >> 8;
        int b = (hexColor & 0xFF);
        return getColorNameFromRgb(r, g, b);
    }

    public int colorToHex(Color c) {
        return Integer.decode("0x"
                + Integer.toHexString(c.getRGB()).substring(2));
    }

    public String getColorNameFromColor(Color color) {
        return getColorNameFromRgb(color.getRed(), color.getGreen(),
                color.getBlue());
    }

    /**
     * SubClass of ColorUtils. In order to lookup color name
     * 
     * @author Xiaoxiao Li
     * 
     */
    public class ColorName {
        public int r, g, b;
        public String name;

        public ColorName(String name, int r, int g, int b) {
            this.r = r;
            this.g = g;
            this.b = b;
            this.name = name;
        }

        public int computeMSE(int pixR, int pixG, int pixB) {
            return (int) (((pixR - r) * (pixR - r) + (pixG - g) * (pixG - g) + (pixB - b)
                    * (pixB - b)) / 3);
        }

        public int getR() {
            return r;
        }

        public int getG() {
            return g;
        }

        public int getB() {
            return b;
        }

        public String getName() {
            return name;
        }
    }
}

1. Populate a list of "known" colors.



2. For each known color compute:

   
   
   

   rgbDistance = Math.abs(myColor.getRed() - colorI.getRed() + 
                 Math.abs(myColor.getGreen() - colorI.getGreen()) +
                 Math.abs(myColor.getBlue() - colorI.getBlue())  
   




3. Return the name of colorI for which rgbDistance was smallest.

Hmm, that's a kind of fun problem. I can think of a few solutions:

嗯，这是一个有趣的问题。我能想到几个解决方案：

1. You could do a bit of guesswork depending on the relationships between the R-G-B values (for example, if one color is very dominant you guess that one, but if there's a bit of other color you get more and more likely to guess the combination of those two emitted colors, if all three are close to equal then guess white, grey, or black depending on how high the average of the three values is, if two are high and the other is low guess the combinatoin of the two, etc. etc.)




2. You could go for a more learning approach where you set some initial guesses (as above) and then improve on those based on feedback from users.

Unfortunately this problem is relatively subjective (although the question is not!) as people's perception of color varies widely between culture and even gender (see Randall Munroe's "study" on it ).

不幸的是，这个问题是相对主观的(尽管问题不是！)因为人们对颜色的感知在不同的文化甚至性别之间差异很大(参见兰德尔·门罗对此的“研究”)。

If you want a specific subset of RGB values (like the ones that are given constants in Java or C# you can iterate through each and compare, finally returning some default value if it's not equal to any of them).

如果您想要RGB值的特定子集(就像在Java或C#中给定常量的那些值，您可以遍历每个值并进行比较，最后如果不等于它们中的任何一个，则返回某个缺省值)。

[EDIT]

[编辑]

Ahh! Colorblind users eh? Have you considered creating a setting which lets the user specify which colors they have trouble differentiating? If you did that you could let them know that something is "20% Redder than Green" (if, for instance, they had red-green colorblindness, which is most common). That would be pretty simple. They select a pixel, and you follow this pseudocode:

啊！色盲用户，嗯？你有没有考虑过创建一个设置，让用户指定他们难以区分哪些颜色？如果你这样做了，你可以让他们知道有些东西比绿色要红20%(例如，如果他们有红绿相间的色盲，这是最常见的)。这将非常简单。他们选择一个像素，然后您遵循下面的伪代码：

if( userColorTrouble == RedGreen )
{
    int redVal = colorInQuestion.GetRed();
    int greenVal = colorInQuestion.GetGreen();
    if( redVal > greenVal )
    {
         return "The color is " + (double)redVal / (redVal + greenVal) - .5d + "% redder than green";
    }
    else
    {
         return "The color is " + (double)greenVal / (redVal + greenVal) - .5d + "% greener than red";
    }
}

That could be a simpler, and more useful solution.

这可能是一个更简单、更有用的解决方案。

You could simply build a lookup table, e.g. using the constants from Color class itself:

您可以简单地构建一个查找表，例如使用来自颜色类本身的常量：

Map<Integer, String> map = new HashMap<Integer, String>();
for (Field f : Color.class.getFields()) {
  if (f.getType() == Color.class) {
    Color c = (Color) f.get(null);
    map.put(c.getRGB(), f.getName()); 
  }
}

If you want all HTML colors or all those form Wikipedia linked by @evan, you have still a little homework to do though.

如果你想要@evan链接的所有的HTML颜色或维基百科的所有那些颜色，你还有一些家庭作业要做。

EDIT resulting map:

编辑生成的地图：

0xff00ffff: CYAN
0xff0000ff: BLUE
0xffc0c0c0: LIGHT_GRAY
0xff808080: GRAY
0xffffff00: YELLOW
0xffff0000: RED
0xffffafaf: PINK
0xff000000: BLACK
0xff00ff00: GREEN
0xffffc800: ORANGE
0xff404040: DARK_GRAY
0xffff00ff: MAGENTA
0xffffffff: WHITE

Not all RGB values have aliases. You may need to create an array containing arrays of Red, Green, Blue, and Alias values. Then you would iterate over that array comparing the RGB values.

并非所有RGB值都有别名。您可能需要创建一个包含红色、绿色、蓝色和别名值的数组。然后，您将遍历该数组，比较RGB值。

http://en.wikipedia.org/wiki/List_of_colors

Http://en.wikipedia.org/wiki/List_of_colors

Edit:

编辑：

Sample:

样品：

//array of known aliases and rgb values
ArrayList colorList = new ArrayList();
colorList.add(new String[] {"255", "0", "0", "Red"});
//etc...

Color c = new Color(255, 0, 0); //test color
String name = "Unknown";
for (String[] color : colorList)
{
    int r = Integer.parseInt(color[0]) //red value
    int g = Integer.parseInt(color[1]) //green value
    int b = Integer.parseInt(color[2]) //blue value
    String alias = color[3];

    if ((c.getRed() == r) && (c.getGreen() == g) && (c.getBlue() == b))
    {
        name = alias; //found it
        break;
    }
}

Frist of all convert pixels from RGB to HSV. It's much easier to define color ranges in HSV than in RGB.

首先，将像素从RGB转换为HSV。在HSV中定义颜色范围比在RGB中容易得多。

/**
*
*@author Tomasz Drobiszewski
*/
public class Color {
    /**
     * Human color table.
     */
    public static final int [] [] colors  = {
            {-1,-10,-360,-0,-100,-10,-80},
            {1,0,360,0,100,0,50},
            {2,0,360,0,15,50,130},
            {3,0,360,0,15,130,210},
            {4,-15,15,15,100,50,255},
            {5,15,45,15,100,50,255},
            {6,45,75,15,100,50,255},
            {7,75,105,15,100,50,255},
            {8,105,135,15,100,50,255},
            {9,135,165,15,100,50,255},
            {10,165,195,15,100,50,255},
            {11,195,225,15,100,50,255},
            {12,225,255,15,100,50,255},
            {13,255,285,15,100,50,255},
            {14,285,315,15,100,50,255},
            {15,315,345,15,100,50,255},
            {16,345,375,15,100,50,255},
            {17,0,360,0,15,210,255} 
    };

    /**
     * Color names.
     */
    public static final String [] humanColors = {
            "unrecognized", 
            "black", //black colors[1]
            "grey",
            "light_grey",
            "red",
            "orange",
            "yellow",
            "jasny_zielony",
            "zielony",
            "zielony",
            "turkusowy",
            "jasny_niebieski",
            "niebieski",
            "fioletowy",
            "fioletowy",
            "rozowy",
            "czerwony",
            "bialy",
        };

    /**
     * Convert from  RGB do HSV
     * 
     * @param r
     * @param g
     * @param b
     * @param hsv
     */
    public static void rgb2hsv(int r, int g, int b, int hsv[]) {

        int min; // Min. value of RGB
        int max; // Max. value of RGB
        int delMax; // Delta RGB value

        if (r > g) {
            min = g;
            max = r;
        } else {
            min = r;
            max = g;
        }
        if (b > max)
            max = b;
        if (b < min)
            min = b;

        delMax = max - min;

        float H = 0, S;
        float V = max;

        if (delMax == 0) {
            H = 0;
            S = 0;

        } else {
            S = delMax / (float) max;
            if (r == max)
                H = ((g - b) / (float) delMax) * 60;
            else if (g == max)
                H = (2 + (b - r) / (float) delMax) * 60;
            else if (b == max)
                H = (4 + (r - g) / (float) delMax) * 60;

        }

        hsv[0] = (int) (H);
        hsv[1] = (int) (S * 100);
        hsv[2] = (int) V;
    }

    /**
     * Return human color index {@link Color#colors}
     * 
     * @param r
     * @param g
     * @param b
     * @return
     */
    public static int [] getHumanColor(int r, int g, int b) {
        int [] res = {0, 0, 0, 0};
        int[] hsv = new int[3];
        rgb2hsv(r, g, b, hsv);
        for (int i = 1; i < colors.length; i++) {
            if (hsv[0] <= colors[i][2] && hsv[0] >= colors[i][1]
                    && hsv[1] <= colors[i][4] && hsv[1] >= colors[i][3]
                    && hsv[2] <= colors[i][6] && hsv[2] >= colors[i][5]) {
                res[3] = i;
                res[0] = hsv[0];
                res[1] = hsv[1];
                res[2] = hsv[2];
                return res;
            }

        }
        return res;
    }

}

public static String findColorNameByColor(Color c) throws IllegalArgumentException, IllegalAccessException {
    String candidateColorName = null;
    int rgbDistance = -1;
    for(Field f : Color.class.getFields()) {
        Color sys_c = (Color) f.get(null);
        int dif_r = Math.abs(c.getRed() - sys_c.getRed());
        int dif_g = Math.abs(c.getGreen() - sys_c.getGreen());
        int dif_b = Math.abs(c.getBlue() - sys_c.getBlue());
        int sum = dif_r+dif_g+dif_b;
        if(sum == 0) {
            return f.getName().trim().toLowerCase();
        }else {
            if (rgbDistance == -1) {
                rgbDistance = sum;
                candidateColorName = f.getName().trim().toLowerCase();
            }
            if(rgbDistance > sum) {
                rgbDistance = sum;
                candidateColorName = f.getName().trim().toLowerCase();
            }
        }
    }
    return candidateColorName;
}

In my case I was looking for a quick way to get the name of primary colours displayable on all on or all off LEDs so the following function works for me. Hope it's helpful to someone.

在我的例子中，我正在寻找一种快速的方法来获得可在所有开或所有关的LED上显示的原色的名称，因此以下功能对我有效。希望能对某些人有所帮助。

public static String getColourName(int c) {
    String name = "UNKNOWN";
    int colour = Color.BLACK;

    if(Color.red(c) > 127)  { colour |= Color.RED; }
    if(Color.green(c) > 127) { colour |= Color.GREEN; }
    if(Color.blue(c) > 127) { colour |= Color.BLUE; }

    switch (colour) {
        case Color.BLACK:
            name = "BLACK";
            break;
        case Color.BLUE:
            name = "BLUE";
            break;
        case Color.GREEN:
            name = "GREEN";
            break;
        case Color.CYAN:
            name = "CYAN";
            break;
        case Color.RED:
            name = "RED";
            break;
        case Color.MAGENTA:
            name = "MAGENTA";
            break;
        case Color.YELLOW:
            name = "YELLOW";
            break;
        case Color.WHITE:
            name = "WHITE";
            break;
    }
    return name;
}