Accessibility isn't optional, it's a legal requirement in many jurisdictions and a moral imperative everywhere. One of the most common accessibility failures is poor colour contrast, which makes text unreadable for the 300 million people worldwide with colour vision deficiencies.
Our free Colour Contrast Checker instantly calculates the contrast ratio between any foreground and background colour pair. It tests against WCAG 2.1 AA and AAA standards for both normal and large text, giving you clear pass/fail indicators so you know exactly where you stand.
The tool is essential for web designers, front-end developers, product managers, and anyone responsible for digital content. Whether you're choosing brand colours, designing a UI component, or auditing an existing site, contrast checking should be part of your workflow.
To use it, simply enter or pick your foreground and background colours using hex codes or the colour picker. The tool displays the contrast ratio, WCAG compliance status for AA and AAA levels, and a live preview showing your colours on realistic UI components like buttons and text blocks.
If your colours fail the contrast check, the tool suggests an accessible alternative, a colour close to your original that meets the required ratio. This means you don't have to abandon your brand palette; you just adjust the specific shade to meet accessibility standards.
For a complete design workflow, pair this with our CSS Gradient Generator when building gradient backgrounds, and use our CSS Style Builder to visually create accessible button and text styles. Our Box Shadow Generator can also help add depth without relying solely on colour differences.
The tool runs entirely in your browser with zero dependencies. No sign-up, no data storage, no ads. Just fast, accurate contrast checking based on the official WCAG 2.1 luminance algorithm.
Book a free consultation with our team, no obligation, no sales pitch, just honest advice.
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