IconVault's Contrast Grid checks the color contrast of your entire palette in one view. Add your foreground and background colors to see a live contrast ratio matrix where each cell shows the exact WCAG 2.1 ratio with a clear AA, AAA, AA-large or Fail badge, so failing pairs stand out instantly instead of requiring one-by-one checks.

Ratios are computed from relative luminance exactly as WCAG 2.1 defines it (4.5:1 for normal text, 3:1 for large text, 7:1 for AAA), and everything runs fully in your browser with nothing uploaded. It is free to try (repeated use may ask for Pro), and you can export the matrix as CSV for design reviews and audit reports.