Design Tool
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Free Online Color Contrast Checker (WCAG)
Test foreground and background colors for WCAG contrast compliance with live ratio and pass/fail guidance.
Color Picker & Formats
Use the picker above and read values below
Saved Colors
Palette Generator
5
Contrast Checker (WCAG)
AA is for normal text (4.5:1), AAA is stricter (7:1), and Large AA applies to large text (3:1).
Gradient Generator
90deg
Extract Colors from Image
Upload an image and click extract to get dominant colors.
Why use our Free Online Color Contrast Checker?
WCAG Compliance Checks
Test color combinations against WCAG AA, AAA, and Large AA requirements.
Clear Ratio Output
View exact contrast ratio values with pass/fail status for faster decisions.
Accessible Design Workflow
Validate text and background colors before publishing websites or UI updates.
Frequently Asked Questions
Is this contrast checker free online?
Yes. This WCAG contrast checker is free online and runs directly in your browser.
What are AA, AAA, and Large AA?
AA requires 4.5:1 for normal text, AAA requires 7:1, and Large AA requires 3:1 for large text.
Can I check any foreground and background color pair?
Yes. You can pick any text and background colors and instantly see ratio and compliance.