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11.2.1.12: Contrast (minimum)

Where ICT is non-web software that provides a user interface, it shall satisfy the success criterion in Table 11.12.

Table 11.12: Software success criterion: Document success criterion: Contrast (minimum)

The visual presentation of text and images of text has a contrast ratio of at least 4.5:1, except for the following:

  • Large Text: Large-scale text and images of large-scale text have a contrast ratio of at least 3:1.
  • Incidental: Text or images of text that are part of an inactive user interface component, that are pure decoration, that are not visible to anyone, or that are part of a picture that contains significant other visual content, have no contrast requirement.
  • Logotypes: Text that is part of a logo or brand name has no minimum contrast requirement.
NOTE: This success criterion is identical to the WCAG 2.0 Success Criterion 1.4.3 Contrast (Minimum).

Testing methods

Type of compliance Inspection
Pre-conditions
  1. The ICT is non-web software that provides a user interface.
Procedure
  1. Check that the software does not fail the Success Criterion in Table 11.12.
Result Pass: Check 1 is true
Fail: Check 1 is false

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