Design & Multimedia
Color Contrast Checker
Check color contrast for accessibility
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
What does the Color Contrast Checker do?
It helps you check color contrast for accessibility.
What inputs do I need?
Enter Foreground color and Background color.
Are decimals supported?
Yes, you can use decimal values where appropriate.
Related tools
About this tool
Inputs
- Foreground color
- Background color
Results
- Contrast ratio
- Normal text
- Large text
The Color Contrast Checker validates your input against known rules and tells you whether it passes. Fast feedback prevents downstream errors. Design calculations bridge creative vision and technical constraints, from pixel grids to print bleeds. Font size in pixels = font size in pt × DPI / 72. Type in foreground color and background color.
The computation runs immediately, giving you contrast ratio, normal text and large text. From students to professionals, anyone who needs to check color contrast for accessibility benefits from getting an instant, verifiable answer. Always provide alt text for images and ensure interactive elements are keyboard-accessible. Consistent sizing, spacing, and color values give a design cohesion that viewers feel even if they cannot articulate it. If the result surprises you, revisit your inputs — a mistyped digit or wrong unit is usually the culprit.