Color Tools
Color Contrast Checker
Color Contrast Checker computes the contrast ratio between two colors and compares it against WCAG AA and AAA thresholds. It returns the numeric ratio and pass/fail results to guide accessible color choices for text and UI.
Tool workspace
Color Contrast Checker
Quick guide
How to use
1. Enter or paste your data into Color Contrast Checker. 2. Choose the relevant options. 3. Review, copy, or download the result.
Details
About this tool
Color Contrast Checker computes the contrast ratio between two colors and compares it against WCAG AA and AAA thresholds. It returns the numeric ratio and pass/fail results to guide accessible color choices for text and UI. The functional interface is kept at the top so you can complete the task before reading further guidance.
Use color values with context
Color Contrast Checker gives you a practical color value or accessibility check. Test the final colors in the actual interface as surrounding size, weight, and contrast can affect readability.
Practical inputs
Examples JSON
Example
Input: #111827 over #FFFFFF
Result: the displayed contrast ratio and accessibility guidance.
Help
Frequently asked questions
Can I use this on mobile?
Yes. The interface is designed for current mobile and desktop devices.