Finding block most matched to RGB Color in Minecraft

I am going to make a plugin that can convert images to pixel art - does anyone know the simplest way of matching an RGB Colour to a block in Minecraft?

 

Play with it, didn't test it at all

Code:java

private Map<String, Byte> colorMap = new HashMap<String, Byte>();
 
    @Override
    public void onEnable()
    {
        // Put in here your color codes and item data for wool
        colorMap.put("FFFFFF", (byte) 15);
    }
 
    public byte getClosestColorData(String rgb)
    {
        return getClosestColorData(Integer.parseInt(rgb.substring(0, 2)), Integer.parseInt(rgb.substring(2, 4)), Integer.parseInt(rgb.substring(4, 6)));
    }
 
    public byte getClosestColorData(int r1, int g1, int b1)
    {
        int r2, g2, b2;
        double difference = 0;
        String closestRGB = null;
 
        for (String rawRGB : colorMap.keySet())
        {
            r2 = Integer.parseInt(rawRGB.substring(0, 2));
            g2 = Integer.parseInt(rawRGB.substring(2, 4));
            b2 = Integer.parseInt(rawRGB.substring(4, 6));
 
            double diff = Math.sqrt((r2 - r1) ^ 2 + (g2 - g1) ^ 2 + (b2 - b1) ^ 2);
 
            if (closestRGB == null)
            {
                closestRGB = rawRGB;
                difference = diff;
                continue;
            }
 
            if (diff < difference)
            {
                closestRGB = rawRGB;
                difference = diff;
            }
        }
 
        return colorMap.get(closestRGB);
    }[syntax][/syntax]

 

http://forums.bukkit.org/threads/i-...he-color-of-armor-a-player-is-wearing.138934/

Keep in mind that textures are all client side.

 

Using this code...

Code:

public DyeColor getClosestDyeColor(int r1, int g1, int b1)
    {
        int r2, g2, b2;
        double difference = 0;
        DyeColor closestRGB = null;
 
        for (DyeColor dyeColor : DyeColor.values())
        {
            r2 = dyeColor.getColor().getRed();
            g2 = dyeColor.getColor().getGreen();
            b2 = dyeColor.getColor().getBlue();
 
            double diff = Math.sqrt((r2 - r1) ^ 2 + (g2 - g1) ^ 2 + (b2 - b1) ^ 2);
 
            if (closestRGB == null)
            {
                closestRGB = dyeColor;
                difference = diff;
                continue;
            }
 
            if (diff < difference)
            {
                closestRGB = dyeColor;
                difference = diff;
            }
        }
 
        return closestRGB;
    }

Pure red translates as white and orange as red as well as a few other little niggles

See what has happened with this screenshot of np98765 and md_5 's avatars D:

Aside from that though, it works great so thanks for your help

 

Ooh, looks more like Hellsing 's though

I reckon it'll be better to map ranges to colors, there's only 15 of them after all