WCAG Contrast Checker
Is that text actually readable? Contrast ratio with AA/AAA pass-fail for normal and large text.
Free to use · No account required
Enable JavaScript to use the interactive WCAG Contrast Checker. The input fields and calculations run in your browser.
How it works
Contrast ratio = (L1 + 0.05) / (L2 + 0.05) using WCAG relative luminance. AA needs 4.5:1 (normal text) / 3:1 (large); AAA needs 7:1 / 4.5:1.