Color Contrast Checker
Check the contrast ratio between text and background colors to ensure WCAG accessibility compliance. Shows pass/fail results for AA and AAA levels for both normal and large text.
Check the contrast ratio between text and background colors to ensure your designs meet WCAG accessibility standards. Enter foreground and background colors to see if they pass AA and AAA requirements for normal and large text.
Large Text Preview (24px Bold)
Normal text preview (16px). The quick brown fox jumps over the lazy dog.
Contrast Ratio
Excellent
AA Normal Text
≥ 4.5:1 required
AA Large Text
≥ 3:1 required
AAA Normal Text
≥ 7:1 required
AAA Large Text
≥ 4.5:1 required
Quick Test Examples
100% Client-Side
All contrast calculations happen directly in your browser. No data is sent to any server.
Understanding WCAG Contrast Requirements
Level AA (Minimum)
- • Normal text: 4.5:1 contrast ratio required
- • Large text: 3:1 contrast ratio required
- • Large text is 18pt (24px) or 14pt (18.5px) bold
Level AAA (Enhanced)
- • Normal text: 7:1 contrast ratio required
- • Large text: 4.5:1 contrast ratio required
- • Highest level of accessibility compliance
How to Use the Contrast Checker
- Enter your text color in the foreground input using HEX format.
- Enter your background color in the background input.
- View the contrast ratio and WCAG compliance results instantly.
- Adjust colors until you achieve the desired accessibility level.
Why Contrast Matters
Visual Accessibility
Helps users with low vision read your content
Legal Compliance
Meet ADA and WCAG requirements for accessibility
Mobile Readability
Ensure text is readable in bright sunlight
Better Design
Good contrast often leads to cleaner designs
Frequently Asked Questions
❓ Is this tool free?
Yes! All our tools are completely free. No registration, no hidden charges, no ads. Just open and use.
🔒 Is my data safe?
Absolutely. All calculations happen in your browser. We don't store, send, or track any of your data. Everything is processed locally on your device.
📱 Can I use this on mobile?
Yes! All our tools are fully responsive and work perfectly on smartphones, tablets, and desktops.
🌐 Do I need internet?
No! Once the page loads, you can use the tool completely offline. All calculations happen in your browser without any server connection.