Colour Contrast Checker

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Frontend Utilities | Updated March 22, 2026

Enter foreground and background colors to test accessibility compliance

Check Check

Result:

The Colour Contrast Checker is designed to help you evaluate the visual contrast between foreground (text) and background colors based on Web Content Accessibility Guidelines (WCAG). Proper contrast is essential for ensuring that your content remains readable across different devices, lighting conditions, and for users with varying levels of visual ability.

This tool calculates the contrast ratio between two colors and compares the result against WCAG standards, including AA and AAA compliance levels. These standards are widely used in web accessibility to determine whether text is sufficiently legible for users with low vision or color perception differences.

In addition to providing a numerical contrast ratio, the tool also categorizes the result into accessibility levels, helping you quickly understand whether your design meets minimum requirements or needs improvement. This is particularly useful when designing user interfaces, selecting brand colors, or refining typography for readability.

Whether you are building a website, designing a user interface, or auditing an existing project, this tool offers a fast and reliable way to validate your color choices. By ensuring sufficient contrast, you can improve usability, enhance accessibility compliance, and deliver a better overall experience for all users.