Color Contrast Checker - WCAG Accessibility
Ensure your website is accessible to everyone. Our free Color Contrast Checker verifies your text and background colors against WCAG standards instantly and privately.
What is the Color Contrast Checker?
Web accessibility is a critical requirement for modern development. The Web Content Accessibility Guidelines (WCAG) dictate specific contrast ratios between text and background colors to ensure content is readable for users with visual impairments. This tool acts as an instant auditor. By entering a foreground and background color, it mathematically calculates the exact contrast ratio and determines if it passes WCAG AA and AAA standards. Because design mockups are often confidential, this tool processes all calculations locally, ensuring your color schemes are never transmitted to our servers.
Why Use Our Contrast Checker?
- WCAG Compliance: Instantly tells you if you pass AA or AAA standards.
- Mathematical Precision: Calculates the exact contrast ratio (e.g., 4.5:1).
- 100% Secure: Your brand colors are checked locally and never logged.
- Real-Time Feedback: See a visual preview of how the text looks on the background.
How to Use the Contrast Checker
Enter the HEX code for your Text Color (Foreground).
Enter the HEX code for your Background Color.
Review the visual preview to assess readability.
Check the Score area to see if you passed the WCAG requirements.
Frequently Asked Questions
WCAG AA requires a ratio of at least 4.5:1 for normal text, and 3.1 for large text. WCAG AAA requires 7:1 for normal text.
Currently, the tool accepts standard HEX codes, which are the most common format for web design.
Yes, all contrast mathematics are performed entirely within your browser memory.
All file processing is performed locally in your web browser. We do not upload, store, or view your data.