This resource is designed for anyone eager to master digital accessibility. Explore WCAG success criteria through clear, easy-to-understand descriptions. We owe a special "hat tip" to Johannes Lehner’s WCAG Card Deck, which served as the inspiration for this project.
We plan to expand this library over time, so please check back regularly for updates.
13 success criteria found for 1.4 Distinguishable category
Level Level A, WCAG principle: Perceivable
Assigned to the following themes: SENSORY
Colour must not be the only way to convey information.
Always provide an additional visual cue, like icon, text label, underline, shape, or pattern (e.g. striped, solid).
Level Level A, WCAG principle: Perceivable
Assigned to the following themes: SENSORY
If audio plays automatically for more than 3 seconds, it must be possible to:
without using system-wide controls.
Level Level AA, WCAG principle: Perceivable
Assigned to the following themes: GESTURES ZOOM AND LEGIBILITY
Content remains functional and easy to read when:
without needing to scroll in two directions (except for tables, maps, and similar content).
Level Level AA, WCAG principle: Perceivable
Assigned to the following themes: SENSORY
Interactive controls (e.g. buttons, form fields, focus indicators) and graphics that convey meaning (e.g. icons, charts, graph lines) must have a contrast ratio of at least 3:1 against adjacent colours.
Level Level AA, WCAG principle: Perceivable
Assigned to the following themes: ZOOM AND LEGIBILITY
Text remains readable and usable when spacing is changed using custom styles to at least:
without content being hidden, cut off, or broken.
Level Level AA, WCAG principle: Perceivable
Assigned to the following themes: GESTURES KEYBOARD ZOOM AND LEGIBILITY
When additional content appears on hover or keyboard focus (including long press on touch), it must:
Level Level AA, WCAG principle: Perceivable
Assigned to the following themes: SENSORY ZOOM AND LEGIBILITY
Text contrast against its background must be at least:
Level Level AA, WCAG principle: Perceivable
Assigned to the following themes: ZOOM AND LEGIBILITY
Text remains readable and usable when zoomed to 200%.
Level Level AA, WCAG principle: Perceivable
Assigned to the following themes: SENSORY ZOOM AND LEGIBILITY
Text must be actual text, not images of text, unless a specific visual presentation is absolutely necessary (e.g. logo).
Level Level AAA, WCAG principle: Perceivable
Assigned to the following themes: SENSORY ZOOM AND LEGIBILITY
Text contrast against its background must be at least:
Level Level AAA, WCAG principle: Perceivable
Assigned to the following themes: SENSORY
For prerecorded audio with speech, any background sound must be:
Level Level AAA, WCAG principle: Perceivable
Assigned to the following themes: SENSORY ZOOM AND LEGIBILITY
Blocks of text (like paragraphs) must:
allow users to adjust spacing and colors using custom styles.
Level Level AAA, WCAG principle: Perceivable
Assigned to the following themes: SENSORY ZOOM AND LEGIBILITY
Text must be actual text, not images of text (no exception, not even for design or aesthetic reasons).