Check WCAG contrast for every foreground/background pair in a palette at once. Contrast Grid Checker is a free online tool from the ToolsRift Color Tools collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Enter your palette colors and read the grid — each cell shows the contrast ratio and whether that foreground/background pair passes WCAG.
A matrix of every color paired against every other color, with each cell's contrast ratio and WCAG pass/fail status.
It reveals which text-on-background combinations in your palette are accessible and which to avoid, in a single view.
Each cell indicates whether the pair meets AA and AAA thresholds for normal and large text.