What it does
Contrast Checker by Acart Communications compares foreground and background colours. It includes ordinary and larger text samples, a greyscale view and a history of checked pairs.
Enter the foreground and background values, or choose Get from image and drag in a reference image. The page shows the ratio alongside AA and AAA result labels.
Use See Grayscale to inspect the pair without its hue difference. Add to History keeps a comparison in the on-page results table, where foreground, background, sample and status appear together. Save PDF provides a report route after collecting the pairs.
The samples include 12-pixel and 18-pixel text, while some result labels refer to 18-point text. Keep the size units distinct when applying a rating to your own design.
Strengths
- The history groups several comparisons before reporting.
Best for
- Collecting colour-pair checks from a design reference
Sources
- WCAG Contrast Checker (Oct 27, 2026)