A Dictionary of Color Combinations

Contrast checker

Pick a pair of dictionary colors and get the WCAG 2.1 verdict: the contrast ratio, whether text passes AA (4.5:1) and AAA (7:1), and which book colors stay readable on the chosen background.

The spirit of ink

A color combination is a relation, not a sum. Sanzo Wada, 1933.

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  • AA — normal text (≥ 4.5:1)
  • AAA — normal text (≥ 7:1)
  • AA — large text (≥ 3:1)
  • Graphics & UI components (≥ 3:1)

Readable on this background

Book colors with contrast ≥ 4.5:1 against the chosen background, highest first.