Free Color Contrast Checker
Check WCAG accessibility compliance for your colors with our free tool. Real-time contrast ratios.
- WCAG 2.1 AA/AAA testing
- Real-time contrast ratio
- Text preview simulation
- Color picker integration
- Suggested accessible alternatives
Frequently Asked Questions
What contrast ratio do I need?
WCAG AA requires 4.5:1 for normal text and 3:1 for large text (18px+ or 14px+ bold). AAA requires 7:1 and 4.5:1 respectively. UI components need 3:1.
Is color contrast legally required?
In many jurisdictions, yes. ADA compliance in the US, AODA in Ontario, and EU accessibility directives reference WCAG guidelines. Non-compliance can lead to lawsuits.
How do I fix low contrast?
Darken the darker color or lighten the lighter one. Our tool suggests accessible alternatives. Small adjustments often achieve compliance without changing your brand colors dramatically.