COLORPREMISE LEARNING

Accessible Color Contrast for UI Design

Understand contrast ratios and build more readable buttons, headings and interface controls.

The essentials

Start with the background and foreground actually used in the interface. Check body text against the typical 4.5:1 WCAG AA threshold and qualifying large text against 3:1. Test focus indicators, icon visibility and different themes separately. Never rely on color alone to communicate an error.

Put the idea into practice

Experiment with these free tools. Review the generated code and adapt it to your own brand, user interface and accessibility requirements.

Contrast Checker ↗Focus Ring Designer ↗

Keep improving your design

Test on desktop and mobile, check text readability, and keep your CSS and design tokens maintainable. Explore the complete ColorPremise tool library when you need another component or asset.