Color Contrast Checker
Check color contrast ratios for WCAG accessibility. Free online tool.
All processing happens in your browser. Your data never leaves your device.
Large Text (18pt+)
Normal Text (14-18pt)
Small text example for testing readability and contrast compliance.
0.00:1
Contrast Ratio
How to Use
- 1Choose foreground and background colors.
- 2See the contrast ratio and preview.
- 3Check WCAG compliance levels.
What is Color Contrast Checker?
Color Contrast Checker is a free online accessibility tool that helps ensure your web content is usable by everyone, including people with disabilities.
Key Features
- WCAG 2.1 contrast ratio calculation
- AA and AAA compliance check
- Live text preview
- Color picker support
- 100% client-side
Color Contrast Checker vs Other Tools
| Feature | Color Contrast Checker | Other Tools |
|---|---|---|
| Client-side processing | Yes | Varies |
| No signup required | Yes | Often required |
| Privacy-first (no data sent) | Yes | Rarely |
| Free & unlimited | Yes | Often limited |
| No ads interruption | Yes | Often no |
FAQ
Why is web accessibility important?
Web accessibility ensures that websites and tools are usable by everyone, including people with disabilities. It's both a legal requirement in many jurisdictions and a best practice for inclusive design.
What are WCAG guidelines?
WCAG (Web Content Accessibility Guidelines) provide a set of recommendations for making web content more accessible. They cover perceivability, operability, understandability, and robustness.