2.5.1.2.1. Ensure that foreground and background color combinations provide sufficient contrast when viewed by someone having color deficits or when viewed on a black and white screen

[Priority 2 for images, Priority 3 for text]

Checkpoint 2.2

"Ensure that foreground and background colors contrast well. If specifying a foreground color, always specify a background color as well (and vice versa)." [14]

Use these CSS properties to specify colours:

Numbers should be used for colour values, not names.

Examples:

Copyright © 2001-2003 by Rainer Hillebrand and Thomas Wierlemann