Operable / 2.3 Seizures and Physical Reactions
2.3.2Three Flashes
Level AAANever include content that flashes more than three times per second, regardless of intensity or color -- a stricter AAA version of 2.3.1 with no threshold exception. It applies to all content on the page, whether video or animation.
Note
A detailed commentary for this success criterion is not yet available. In the meantime, this page lists related patterns, techniques, and links to the normative sources.
Related Techniques
Specific implementation techniques for meeting this success criterion. This site doesn't include the full text, so follow the links to the original W3C documents.
Normative References
- Success Criterion 2.3.2 Three Flashes — WCAG 2.2(opens in a new tab)The normative requirement text.
- Understanding Three Flashes — W3C(opens in a new tab)Official guidance on intent, examples, and techniques.