How to Test Color Contrast for WCAG 2.1 AA & AAA Accessibility

Published: 2026-02-08 | Read Time: 3 min read

Verify whether your foreground text and background colors meet Web Content Accessibility Guidelines (WCAG 2.1) AA (4.5:1) and AAA (7:1) contrast standards.

Frequently Asked Questions

Why is gray text on white buttons an accessibility violation?

Light gray text on white frequently yields contrast ratios below 3:1, making it illegible for users with low vision or when viewing mobile screens in direct sunlight.