Color Contrast Checker
Free online WCAG contrast ratio checker. Test color pairs for AA and AAA compliance. 100% client-side.
Sample Text
The quick brown fox jumps over the lazy dog. This is a sample paragraph to demonstrate how text looks against the selected background at various sizes.
Small text sample — WCAG requires higher contrast for smaller text.
Contrast Ratio18.37:1
AA Normal
AA Large
AAA Normal
AAA Large
Test Pairs