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RAPDFAA

How to test criterion 2.2 “Is the contrast between the colour of the text and the colour of its background sufficiently high (excluding special cases)?”

WCAG references
  • 1.4.3 Contrast (minimum) (AA)

Official methodology to test criterion 2.2

Test 1 (2.2.1)

For normal text size, does the contrast ratio between the text and its background meet one of these conditions (excluding special cases)?

  • The contrast ratio between the text and its background is at least 4.5:1.
  • A replacement mechanism is used to display the text with a contrast ratio of at least 4.5:1.

Test 2 (2.2.2)

For enlarged text, does the contrast ratio between the text and its background meet one of these conditions (excluding special cases)?

  • The contrast ratio between the text and its background is at least 3:1.
  • A replacement mechanism is used to display the text with a contrast ratio of at least 3:1.