Ensure your digital designs are accessible to everyone. Analyze contrast ratios and verify WCAG compliance instantly.
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Auto-detects dominant colors
Text Color
#000000
Background Color
#ffffff
21.00
Ratio
Normal Text (AA)
PASSNormal Text (AAA)
PASSLarge Text (AA)
PASSUI Components
PASSModern UI Design
This simulates a real component. Good contrast improves readability for everyone.
Image Placeholder
Preview
Readable text example.
Protanopia
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Readable text example.
Deuteranopia
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Readable text example.
Tritanopia
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Readable text example.
Monochromacy
Web accessibility relies on sufficient color contrast between text and background. This tool helps you meet WCAG standards.
Using the correct contrast ratio ensures that users with visual impairments can read your content without difficulty.
Aim for a ratio of at least 4.5:1 for normal text and 3:1 for large text to achieve AA level compliance.
Creating accessible digital experiences starts with color. Our advanced Color Contrast Checker helps designers and developers ensure their websites meet global accessibility standards, making content readable for everyone, including users with visual impairments.
The Web Content Accessibility Guidelines (WCAG) are the international standard for web accessibility. Compliance ensures your site is usable by people with disabilities. Our tool checks against WCAG 2.1 Level AA and AAA standards automatically.
Low contrast text causes eye strain and makes reading difficult for millions of users. Proper color contrast improves user experience (UX), increases time-on-site, and ensures your message is clearly understood by all audiences.
The contrast ratio is a numerical value from 1:1 to 21:1. WCAG AA requires a minimum ratio of 4.5:1 for normal text and 3:1 for large text. Level AAA requires stricter ratios of 7:1 and 4.5:1 respectively.
Many countries, including the US (ADA), UK (Equality Act), and EU, require government and public sector websites to be accessible. Failing to meet contrast standards can lead to legal risks and exclusion of potential customers.
What is the minimum contrast ratio for web text?
For WCAG 2.1 Level AA, the minimum ratio is 4.5:1 for normal text and 3:1 for large text (bold 18pt+ or standard 24pt+).
How do I fix low color contrast?
You can darken the foreground color or lighten the background color (or vice versa). Use our 'Auto-Fix' feature to instantly find the nearest compliant color.
Does color contrast affect SEO?
Indirectly, yes. Search engines prioritize user experience. Accessible sites often have lower bounce rates and better engagement, which are positive ranking signals.
What is the difference between AA and AAA?
AA is the industry standard for most business websites. AAA is the gold standard, requiring higher contrast (7:1), typically used for government or specialized accessible sites.