Validate color contrast ratios, simulate visual deficiencies, and fix failing colors instantly with our "Smart Suggestor" engine.
This is normal paragraph text (14pt). Accessibility is not just a feature, it's a fundamental aspect of user experience design. The quick brown fox jumps over the lazy dog.
Add your brand colors to instantly see which combinations are safe to use together.
* Numbers represent the contrast ratio. Green means AA compliance (>=4.5), Yellow means large text / UI compliance (>=3.0), Red means fail.
Accessibility is no longer optional. With the rollout of the Web Content Accessibility Guidelines (WCAG) 2.2, ensuring your website has adequate color contrast is a critical step for both legal compliance and broad user reach. The most common accessibility failure is low color contrast (e.g., light grey text on a white background).
The standard minimum contrast requirement for paragraph text (typically below 18pt or 14pt bold).
The strictest contrast standard for normal text, required for total compliance in highly critical environments.
Required ratio for large headings (18pt+ or 14pt+ bold) and UI components like borders, borders, and icons.
Our tool goes beyond simple pass/fail reporting. If your brand color combinations fail to meet the required ratios, our algorithms calculate the relative luminance of the colors and automatically step the lightness towards a compliant state, preserving your original hue and saturation as much as physically possible.
Over 300 million people worldwide have some form of color vision deficiency (CVD). To create an inclusive design, you must ensure your UI uses more than just color to convey information. Our live SVG Matrix Vision Simulator instantly morphs your color combinations to represent what users with Protanopia (red-blind), Deuteranopia (green-blind), Tritanopia (blue-blind), or Achromatopsia (monochromacy) actually see.
WCAG defines minimum contrast ratios between text and background colors. AA requires 4.5:1 for normal text, AAA requires 7:1.
Enter your text color and background color. The tool instantly shows if they pass AA and AAA standards for both normal and large text.
The tool suggests the closest passing color alternatives so you can maintain your brand while meeting accessibility standards.