- Success Criterion 1.4.3
- Conformance level AA
Custom Video Player Captions With Too-Low Contrast
1.4.3 — Contrast (Minimum)
Scenario
Setting
A project-management tool's task board
What’s wrong
Caption/subtitle text rendered by custom players below ratio.
Example
A QA pass on a project-management tool's task board turns this up: caption/subtitle text rendered by custom players below ratio.
Why it matters
Low-vision and older readers, plus anyone viewing a dim or sunlit screen. The practical effect on a project-management tool's task board: they can't perceive the control's boundary or state.
How to test
Play a video with custom captions/subtitles rendered by the player: measure the caption text against the video frame behind it.
How to fix
The text must meet at least 4.5:1 contrast (3:1 for large text) against its actual background in every state (default, hover, focus, selected).
Outcome
That one change on a project-management tool's task board means they read the text clearly against its background.
Who is affected
Low-vision and older readers, plus anyone viewing a dim or sunlit screen.
Learn more
- Understanding Understanding document (opens in a new tab)
Related scenarios
- Text Color Set Without a Matching Background Color
- Text Placed Directly Over a Photo With No Solid Backing
- Body Text Contrast That Falls Below the 4.5:1 Minimum
- Large Heading Text That Still Falls Below 3:1 Contrast
- Placeholder Text With Contrast Too Low to Read Easily
- Text on a Gradient Background Dropping Below Contrast Ratio