Contrast Checker
Check color contrast ratios for better accessibility.
The quick brown fox jumps over the lazy dog.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Contrast Ratio
21.00:1
Excellent
WCAG Accessibility Score
AA - Normal Text
Minimum ratio 4.5:1 recommended for normal text.
AAA - Normal Text
Enhanced ratio 7:1 recommended for normal text.
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Ensure your digital content is accessible to all users with our professional Contrast Checker. In modern web design, sufficient color contrast between text and its background is not just a best practice—it's a critical requirement for users with visual impairments and for better readability in various lighting conditions. This tool calculates the contrast ratio of any two colors instantly, providing a clear Pass/Fail score based on the Web Content Accessibility Guidelines (WCAG) 2.1 standards. Whether you are a designer selecting a brand palette or a developer auditing a website, our interactive checker helps you achieve compliance with AA and AAA standards for both normal and large text. Processed entirely in your browser, it ensures your design choices remain private while helping you build a more inclusive web experience.
How to Use About Contrast Checker
Upload
Select a foreground (text) color using the color picker or enter a HEX code.
Configure
Select a background color.
Process
The tool will automatically calculate the contrast ratio.
Get Result
Review the Pass/Fail scores below for different text sizes and standards.
Comments & Discussion
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WCAG Compliance
Check if your color combination meets WCAG 2.1 AA and AAA standards for accessibility.
Real-time Preview
Instantly see how your text looks on the background as you adjust colors.
Visual Score
Get a clear Pass/Fail result for normal and large text sizes.
About Contrast Checker
Accessibility is key for modern web design. This tool calculates the contrast ratio between two colors and checks compliance with WCAG AA and AAA standards.
Is About Contrast Checker Secure?
Local Browser Processing
Your data stays with you. About Contrast Checker never sends your files to our servers. All processing happens 100% in your browser (client-side), ensuring complete privacy.
No Logs Policy
We do not track your activity. About Contrast Checker operates completely anonymously. Your files and data are cleared from your browser instantly after processing.
Free & Unlimited
No hidden fees or daily limits. You can use About Contrast Checker as much as you want for free. No credit card or subscription required.
No Installation
No need to download software or plugins. About Contrast Checker works instantly and securely right in your web browser.
Mobile Friendly
About Contrast Checker works seamlessly on all devices. Access it from your phone, tablet, or computer and get your tasks done anywhere.
Fast Performance
Powered by optimized algorithms, About Contrast Checker completes your tasks in seconds. Get instant results without waiting.
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