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HTML & XHTML: The Definitive Guide, 6th Edition
book

HTML & XHTML: The Definitive Guide, 6th Edition

by Chuck Musciano, Bill Kennedy
October 2006
Intermediate to advanced content levelIntermediate to advanced
680 pages
21h 44m
English
O'Reilly Media, Inc.
Content preview from HTML & XHTML: The Definitive Guide, 6th Edition

Appendix G. Color Names and Values

With the popular browsers, and according to the Cascading Style Sheets (CSS) standard, you may prescribe the display color for various elements in your documents. You do so by specifying a color value or a standard name. The user may override these color specifications through her browser preferences.

Color Values

In all cases, you may set the color value for an HTML element, such as <body> text, <table> background, and so on, as a six-digit hexadecimal number that represents the red, green, and blue (RGB) components of the color. The first two digits correspond to the red component of the color, the next two are the green component, and the last two are the blue component. A value of 00 corresponds to a component being completely off; the hexadecimal value of FF (decimal 255) corresponds to the component being completely on. Thus, bright red is FF0000, bright green is 00FF00, and bright blue is 0000FF. Other primary colors are mixtures of the components, such as yellow (FFFF00), magenta (FF00FF), and cyan (00FFFF). White (FFFFFF) and black (000000) also are easy to figure out.

You use these values in a tag by replacing the color with the RGB triple, preceded by a pound sign (#). Thus, to make all visited links display as magenta, use this body tag:

<body vlink="#FF00FF">
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Publisher Resources

ISBN: 0596527322Errata Page