Building inclusive web applications starts with color and contrast. Use these professional-grade accessibility utilities to verify that your UI components meet legal ADA and international WCAG standards entirely inside your browser.
Instantly calculate the contrast ratio between text and background colors. Includes our "Smart Fixer" that suggests the nearest color to pass WCAG 2.1 AA and AAA standards.
Open ToolThe definitive developer's guide to color contrast, luminance, and accessibility. Learn why 4.5:1 matters and how to pass a professional accessibility audit.
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