HTML Color Matrix: Determine the closest browser safe color value

You may have heard of the browser safe palette, Netscape palette, 216 palette, Web palette, or 6x6x6 color cube. All these terms refer to the same set of colors that usually are guaranteed to be available for displaying in Web pages in a browser screen using 256 colors without color remapping.

If you are concerned that your Web design work will be viewed in a 256 color (8-bit) screen, you may use the methods provided by this class to convert your color values to the closest color tones in the 216 color browser safe palette.

This class accepts hexadecimal color values or RGB values.