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Module 1: Checkpoint 8—Font colour contrast

Conformance: Mandatory

Requirements

The colour contrast on all text must have a contrast ratio to the background of at least 4.5:1.

Refer to Module 2: Screen layout, checkpoint 20 for font colour requirements for main content.

Benefits of conformance

  • Increases readability.
  • Dark coloured fonts on white or light coloured backgrounds enhances readability.

Risks of non-conformance

  • Lower colour contrast can make text unreadable.
  • Light fonts on dark backgrounds reduce readability.

Implementation advice

Explanation

Heading 1 text may have a colour contrast of 3:1 or greater. Refer to Module 2 – Screen layout, Checkpoint 18 – Page title.

Examples

Correct implementation: colour contrast is 15.1:1
Correct implementation: colour contrast is 15.1:1

Incorrect implementation: colour contrast is 1.3:1.
Incorrect implementation: colour contrast is 1.3:1.