Web-safe Colors
From ColorWiki
Web-safe colors are a palette of 216 colors which, when used by a designer in graphics intended for display on the Web, are less likely to be dithered, altered, or otherwise screwed up by a Web browser. The 216 color palette is an 8-bit palette which has 40 colors reserved for use by both the Mac and Windows operating systems and so has 216 common colors left over. Most modern computers are capable of 24-bit color, and this "TrueColor" resolution makes the need for Web-safe colors less relevant. In fact, while these colors may be used as a source palette, the need for indexed color is completely out of date.
See Also
- Cross Platform Color
- Color Workflow Reserved Article
- sRGB