Contrast Checker
Check colour contrast against WCAG 2.2 AA and AAA thresholds for text and UI.
Processed locallyRuns in your browserNo account required
Browser-based processing: Your files are processed locally in your browser and are not uploaded during processing.
Frequently asked questions
- Yes. Contrast Checker is completely free with no account, no sign-up and no usage limits beyond fair-use rate limiting.
- This tool processes files locally in your browser. Your files are not uploaded to our server during processing.
- Browser-based tools are limited mainly by your device memory and browser capabilities.
Related color tools
HEX to RGB Converter
Convert between HEX and RGB/RGBA, with alpha and shorthand support.
Open tool→
HEX to HSL Converter
Convert between HEX and HSL/HSLA for easier tint and shade generation.
Open tool→
HEX to CMYK Converter
Convert screen colours to CMYK percentages for print work.
Open tool→
Trending
CSS Gradient Generator
Design linear, radial and conic gradients with multi-stop editing and copy-ready CSS.
Open tool→
Color Blindness Simulator
Preview colours and images through eight types of colour-vision deficiency.
Open tool→