WCAG Color Contrast Checker

WCAG (Web Content Accessibility Guidelines) defines minimum contrast ratios between text and background to ensure readability for people with visual impairments. AA requires 4.5:1 for normal text.

WCAG AA: 4.5:1 for normal text, 3:1 for large text (18px+). WCAG AAA: 7:1 for normal text, 4.5:1 for large text.

Large text is 18px or larger (normal weight), or 14px or larger (bold weight).

When your colors fail AA, the tool automatically suggests an adjusted text color that meets the 4.5:1 requirement, which you can apply with one click.

Yes, completely free with no signup.