Contrast Checker
Check color contrast ratios online instantly. Test WCAG accessibility compliance for text and background color combinations.
Last updated: 2026-05-20
Free Online Contrast Checker
Use this free online contrast checker tool directly in your browser without installing software. Fast, mobile friendly and easy to use.
Contrast Checker
Check WCAG accessibility contrast ratios for text and background colors instantly.
WCAG Results
Accessible Text
This preview demonstrates how your selected foreground and background colors appear together.
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About This Tool
About Contrast Checker
This free online Contrast Checker helps test color accessibility and WCAG compliance instantly.
Check contrast ratios between text and background colors for better readability and accessible UI design.
What This Tool Supports
- WCAG contrast ratio calculation
- Text/background contrast testing
- AA accessibility validation
- AAA accessibility validation
- Live color preview
- HEX color support
- Accessibility recommendations
- Responsive UI
- Frontend accessibility testing
- Copy-ready color values
Frequently Asked Questions
What is color contrast ratio?
Color contrast ratio measures the difference in brightness between foreground and background colors.
Why is contrast important?
Good contrast improves readability and accessibility for users including visually impaired users.
What is WCAG compliance?
WCAG is a web accessibility standard that defines minimum contrast requirements for readable content.
What contrast ratio is recommended?
WCAG AA generally requires at least 4.5:1 for normal text and 3:1 for large text.
Is this Contrast Checker free?
Yes. This tool is completely free to use online.
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