Color Contrast Checker
Check text and background contrast with practical WCAG pass/fail guidance.
FreeBrowser ToolPrivacy-consciousNo signup
Input
Add your values, use sample input if helpful, then run the tool.
Privacy note: this tool runs in your browser and does not require an API key.
Result
Review the output, then copy or download it.
Your result will appear here.
What this tool does
Check text and background contrast with practical WCAG pass/fail guidance.
Use it before publishing landing pages, buttons, UI sections, and brand color combinations.
How to use
- Add your input.
- Click Run Tool.
- Review the result and guidance.
- Copy or download the output if useful.
Best use cases
- Quick browser-based checks.
- Developer, SEO, and content cleanup tasks.
- Preparing copy-ready snippets without exposing private keys.
Related tools
FAQs
What is a good contrast ratio?
WCAG AA normal text generally needs at least 4.5:1.
What counts as large text?
Large text has a lower AA threshold of 3:1.
Should I rely only on ratio?
No. Also check size, weight, context, and real device readability.
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