🌗Color Contrast Checker
WCAG contrast ratio for text colors.
About the Color Contrast Checker
Check the contrast ratio between a text and background color and see whether it passes WCAG AA and AAA accessibility standards. Free online color contrast checker.
How to use the Color Contrast Checker
- 1Enter your input into the Color Contrast Checker above.
- 2Adjust any available options.
- 3Get your result instantly and copy or download it.
- 4Everything runs privately in your browser.
Why use this tool?
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Private by design
The Color Contrast Checker runs entirely in your browser — nothing you enter is uploaded to a server.
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Free, no signup
Use it as much as you like. There's no account, no paywall and no watermark.
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Fast & instant
Results appear the moment you type or click — no waiting, no page reloads.
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Works anywhere
Any device or browser, even offline once the page has loaded.
Frequently asked questions
What is a good contrast ratio?＋
WCAG recommends at least 4.5:1 for normal text (AA) and 7:1 for AAA. The tool shows pass/fail for each level.