Contrast checker ♿

Test any text/background pair — ratio plus instant WCAG AA and AAA verdicts. Free, no signup.

Large sample text
This is what normal body text looks like on this background.
Contrast ratio—
AA normal (4.5:1)—
AA large (3:1)—
AAA normal (7:1)—
AAA large (4.5:1)—

Accessible color — FAQ

Rules of thumb

Aim for 4.5:1 minimum on body text. Light gray on white (#999 on #fff ≈ 2.8:1) fails — a very common mistake.

Building a palette?

Pull one from any image with the palette extractor.