Color Contrast Ratio Checker
Calculate contrast ratio between two colors for WCAG compliance. Free, instant.
How to Use Color Contrast Ratio Checker
1
Enter two RGB colors.
2
Get contrast ratio.
3
Check WCAG compliance.
Frequently Asked Questions
What ratio passes WCAG?
AA: 4.5:1 for normal text, 3:1 for large. AAA: 7:1 for normal, 4.5:1 for large.