A browser extension to check compliance with the RGAA standard

In WCAG 2, contrast is a measure of the difference in perceived brightness between two colors, expressed as a ratio

Accessible color palette generator.
Discover beautiful color combinations your whole audience can appreciate and follow Web Content Accessibility Guidelines (WCAG) with ease.

This native application (available for both Windows and Mac) allows you to evaluate the color visibility and contrast of foreground/background color combinations. It provides an initial pass/fail assessment against WCAG 2.0 color contrast success criteria.