The 216-Color Webmaster's Palette.
This is the world's first look at the entire set of browser safe colors arranged symmetrically by hue. This is the set of colors most universally and consistently supported by
Web browsers. When designing a website, its best to choose font and background colors from this set. Also known as the web-safe palette, the safety palette, the universal palette,
Netscape colors, dither-free colors, or the 6x6x6 colors.
menu and see the 6-digit RGB (hexadecimal equivalent) values on the status line.