Example Guideline
- Principle 1: Content must be perceivable
- Guideline 1.4: Make it easy to distinguish foreground information from its background
- Level 1 Success Criteria for Guideline 1.4
- (No level 1 success criteria for this guideline.)
- Level 2 Success Criteria for Guideline 1.4
- 1.4.1 Text or diagrams, and their background, have a luminosity contrast ratio of at least 5:1.
- 1.4.2 A mechanism is available to turn off background audio that plays automatically, without requiring the user to turn off all audio.
- Level 3 Success Criteria for Guideline 1.4
- 1.4.3 Text or diagrams, and their background, have a luminosity contrast ratio of at least 10:1.
- 1.4.4 Audio content does not contain background sounds, background sounds can be turned off, or background sounds are at least 20 decibels lower than the foreground audio content, with the exception of occasional sound effects.
