Color Contrast Checker (WCAG)
Check WCAG color contrast for any foreground/background pair — live preview and AA/AAA pass/fail badges for normal and large text.
Normal text — The quick brown fox jumps over the lazy dog.
Large Text — Pack my box with five dozen liquor jugs.
Contrast Ratio
WCAG Compliance
Why you’ll love Color Contrast Checker (WCAG)
Instant & free
No signup, no paywall, no limits — Color Contrast Checker (WCAG) works the moment the page loads.
Completely private
Everything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any device
Fully responsive and touch-friendly — use it on your phone, tablet or desktop.
Built by developers
Accurate, fast and keyboard-friendly — the details developers care about.
How to use it
Open it
No download and no login — the tool is ready right at the top of this page.
Use it
Enter your details or start interacting. Everything updates live as you go.
Get your result
Copy, download or share your result in a single tap. That’s it.
About Color Contrast Checker (WCAG)
This tool helps designers and developers ensure their color combinations meet WCAG accessibility standards. Simply input your foreground and background colors, and get instant feedback on contrast ratios. Supports both normal and large text sizes, with clear AA and AAA compliance badges so you can build more accessible digital products.
Web Content Accessibility Guidelines (WCAG) define specific contrast requirements to ensure text remains readable by people with low vision or color blindness. This checker provides real-time validation against those standards, helping teams create more inclusive interfaces that work well for everyone while meeting important legal accessibility requirements and compliance standards.
Popular uses
Frequently asked questions
AA is the minimum acceptable standard (4.5:1 for normal text), while AAA is enhanced contrast (7:1 for normal text). AAA benefits users with moderate vision loss. Most sites target AA compliance, though AAA is recommended for text that's large or less critical.
Yes. Large text (18pt+ or 14pt+ bold) has lower contrast requirements than normal text. This tool checks both, showing different thresholds so you can verify compliance for your specific text sizes.
This tool works best with solid colors. For text over images or gradients, test your actual design in a browser. Complex backgrounds may require higher contrast than solid backgrounds to remain readable.
Color Contrast Checker (WCAG) is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
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