How to Use Color Contrast Checker
Check WCAG AA/AAA contrast ratios between two colors. A practical Toolara guide with tips, workflow advice, and links to the free online tool.
Using the free tool while you read? Open Color Contrast Checker.
What Color Contrast Checker helps with
Check color contrast ratios against WCAG AA and AAA guidelines. Improve accessibility for text, buttons, and UI components.
Check WCAG AA/AAA contrast ratios between two colors.
What you can do
Open the free Color Contrast Checker on Toolara, complete the task in your browser, and copy or download the result when you are done.
- Live contrast ratio calculation
- AA/AAA pass-fail checks
- Preview text on your chosen colors
Design checks before you ship
Preview colors, contrast, and images in the size where people will actually see them. A palette or compression setting that looks fine in a large preview can fail in a small card or mobile layout.
Export the values or assets you need as soon as the result looks right so design tokens stay consistent across the project.
- Test contrast on real text sizes
- Optimize images to their display dimensions
- Copy HEX/RGB/CSS values into your design system
Try it on Toolara
Color Contrast Checker is free to use on Toolara.io with no signup. Open the tool, run through the workflow above, then explore related design utilities if you need a neighboring step.