Catch low-contrast text before your users do.
Measure color contrast against WCAG 2.2 right on the page. Pick any two colors, see the exact ratio, and know instantly whether it passes AA and AAA.
Everything you need to get contrast right
Real-time analysis built for designers, developers, and QA — no spreadsheets, no external calculators.
Live ratio engine
Exact contrast ratios to two decimals, recalculated the instant you change a color.
Eyedropper picker
Sample any foreground or background color straight from the live page in one click.
AA & AAA verdicts
Clear pass/fail for normal and large text against both conformance levels, side by side.
Suggested fixes
Get the nearest passing shade when a pair falls short, so you can fix it without guesswork.
From install to answer in seconds
Open on any page
Click the EqualWeb icon in your toolbar while viewing any website you want to check.
Pick two colors
Use the eyedropper to sample foreground and background, or type any hex value directly.
Get your verdict
See the exact ratio and AA/AAA pass-fail instantly — then adjust until everything passes.
Manual checking vs. Contrast Checker
Manual checking
With Contrast Checker
Built around the success criteria that matter
Contrast Checker maps directly to the WCAG color-contrast requirements, so the results you see line up with what auditors and compliance teams expect.
Free. Forever.
Every EqualWeb checker extension is completely free — no trial, no credit card, no account. Install it and start testing in seconds.
Add to Chrome — FreeNeed full-site compliance?
The free extension catches issues page by page. The EqualWeb platform automates remediation, monitoring, and audits across your entire site — and readers of this page get 10% off.
Questions, answered
Is Contrast Checker really free?
Yes — 100% free with no trial, license, or account. The full EqualWeb platform is a separate paid product for organizations that need site-wide automation.
Does it send my data anywhere?
No. All analysis runs locally in your browser — the pages you check never leave your machine.
Which browsers are supported?
Chrome and all Chromium-based browsers, including Microsoft Edge, Brave, and Opera.
Do I need to be an accessibility expert?
Not at all. Results are shown in plain language with clear pass/fail verdicts and the exact WCAG criteria behind them.
What is the 10% discount code for?
It applies to the EqualWeb platform — automated remediation, continuous monitoring, and full audits for teams that need site-wide compliance.
Add Contrast Checker to Chrome
Free, private, and ready in seconds. Start checking color contrast today.