Check color contrast ratio on any website. WCAG accessibility compliant contrast checker.
Users
2
−1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#360K
#274K among extensions
Version
1.0
updated 12 Feb 2026
Users
monthly, 8 months
Latest, 16 Oct 2026:2 usersMove the mouse over the chart for any month
Ratings count
monthly, 8 months
Latest, 16 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Contrast Check – WCAG Color Tester
Easily test color contrast on any website and ensure your design meets WCAG accessibility standards.
Contrast Check helps designers, developers, and content creators quickly measure the contrast ratio between two elements directly on a webpage. With just two clicks, you can instantly see whether your colors pass AA or AAA accessibility requirements.
🚀 How It Works
Click the extension icon
Select the first color on the page
Select the second color
Instantly view contrast ratio and WCAG result
No complicated settings. No external tools. Everything works directly inside your browser.
📊 Features
✔ Instant contrast ratio calculation
✔ WCAG AA & AAA compliance results
✔ Works on any website
✔ Lightweight and fast
✔ No account required
✔ No tracking or analytics
🎯 Who Is This For?
UI/UX Designers
Web Developers
Accessibility Testers
Digital Agencies
Students learning web accessibility
🔒 Privacy First
This extension does not collect, store, transmit, or share any personal data.
All calculations are performed locally in your browser.
No tracking. No analytics. No hidden scripts.
⚡ Why Use Contrast Check?
Accessibility matters. Proper color contrast improves readability and ensures your content is accessible to users with visual impairments.
With Contrast Check, you can validate your design decisions in seconds without leaving the pa