1.4.11: Non-text Contrast [AA]
Description
The visual presentation of the following have a contrast ratio of at least 3:1 against adjacent color(s):
- User Interface Components
- Visual information required to identify user interface components and states, except for inactive components or where the appearance of the component is determined by the user agent and not modified by the author;
- Graphical Objects
- Parts of graphics required to understand the content, except when a particular presentation of graphics is essential to the information being conveyed.
Sufficient Techniques
Sufficient Techniques for Success Criterion 1.4.11
Note: Other techniques may also be sufficient if they meet the success criterion. See Understanding Techniques.
Situation B: Color is required to understand graphical content
Text in or over graphics
- @@ Include labels and values with the graphic (TBD)
- G18: Ensuring that a contrast ratio of at least 4.5:1 exists between text (and images of text) and background behind the text
- G145: Ensuring that a contrast ratio of at least 3:1 exists between text (and images of text) and background behind the text
- G174: Providing a control with a sufficient contrast ratio that allows users to switch to a presentation that uses sufficient contrast