Contrast Checker
Check the contrast ratio between two colors and verify WCAG accessibility compliance for text.
About Contrast Checker
The contrast checker validates text and background color contrast against WCAG accessibility guidelines, reporting pass or fail at each level.
Readable contrast is a legal and quality requirement for accessible websites. This tool compares two colors and tells you whether they meet WCAG AA or AAA for normal and large text, so your design doesn't exclude low-vision users.
When to Use Contrast Checker
Use it to verify a button label against its background, to audit site text colors for accessibility compliance, or to pick text shades that pass for body copy.
Pro Tip
For body text, aim for AA (4.5:1 ratio) as a minimum; AAA (7:1) is best for small text in critical content.
Key Features
Processes Foreground Color, Background Color directly in your browser
Produces contrast ratio, wcag rating instantly
Completely free with no usage limits
No registration or account required
How to Use
Provide the required inputs (Foreground Color, Background Color).
The tool processes everything locally in your browser and instantly produces the following results: Contrast Ratio, WCAG Rating.
Review the result, then copy it to your clipboard or download the output file directly from this page.
Privacy note: Contrast Checker runs 100% in your browser. Your data is never uploaded to any server, so nothing is stored or shared.
Benefits
Your data never leaves your device when using Contrast Checker - everything runs locally
Get accurate results in seconds
Works on desktop, tablet, and mobile
No software download or installation needed
Frequently Asked Questions
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