Čitelnost a kontrast webové stránky

Effective design principles for web designers: Contrast - Ryan Boudreaux reviews the design principle of contrast for web designers and shares some color contrast checking tools.

Effective Color Contrast - This page contains three basic guidelines for making effective color choices that work for nearly everyone. Following the guidelines are explanations of the three perceptual attributes of color -- hue, lightness and saturation -- as they are used by vision scientists.

Color Contrast - Color contrast is an important but often overlooked aspect of web accessibility...

Contrast and Color on Web Pages - An important aspect of color on the Web for both low vision and colorblind users is sufficient contrast between foreground (text or graphics) and the background.