Color Contrast Checker
Pick a text and background color to see the WCAG contrast ratio and whether it passes AA and AAA for normal and large text. Everything runs in your browser.
Almost before we knew it
The quick brown fox jumps over the lazy dog.
18.59 : 1 contrast ratio
AA normal✓ Pass
AA large✓ Pass
AAA normal✓ Pass
AAA large✓ Pass
WCAG 2.1 contrast ratio. 🔒 Runs in your browser.
🔒 Tout se passe dans ton navigateur — rien n'est envoyé ni stocké.
Questions fréquentes
- What is a good contrast ratio?
- WCAG requires at least 4.5:1 for normal text (AA) and 7:1 for the stricter AAA level. Large text needs 3:1 (AA) or 4.5:1 (AAA).
- Why does contrast matter?
- Sufficient contrast keeps text readable for everyone, including people with low vision or color deficiencies, and is a key accessibility requirement.
- Is anything uploaded?
- No. The check runs entirely in your browser.