- Success Criterion 1.4.11
- Conformance level AA
Error Icon or Asterisk With Contrast Too Low to See
1.4.11 — Non-text Contrast
Scenario
Setting
A language-learning app's lesson screen
What’s wrong
Error icons/asterisks that carry state <3:1.
Example
On a language-learning app's lesson screen: error icons/asterisks that carry state <3:1.
Why it matters
Low-vision and color-blind people who need to perceive controls and meaningful graphics. On a language-learning app's lesson screen specifically, they can't perceive the control's boundary or state.
How to test
Measure error icons or asterisks that carry required-field/error state against their background: 3:1 minimum.
How to fix
The visual element (border, icon, indicator, state marker) must have at least 3:1 contrast against adjacent colors in every state.
Outcome
Fixed, a visitor to a language-learning app's lesson screen can see the control's boundary and current state.
Who is affected
Low-vision and color-blind people who need to perceive controls and meaningful graphics.
Learn more
- Understanding Understanding document (opens in a new tab)
Related scenarios
- Focus Outline Removed With No Replacement Indicator
- Input Field Border With Contrast Too Low to See
- Checkbox or Radio Outline Too Faint When Unchecked
- Toggle Switch States Too Similar in Color to Tell Apart
- Focus Indicator Present but Below the Contrast Minimum
- Icon-Only Button Glyph With Contrast Too Low to See