Levels A, AA and AAA
The three WCAG conformance levels, landmark criteria (alternatives, contrast, captions, keyboard) and the AA level targeted by the legal obligation, taken up by the RGAA.
- 26 cards
- 5 topics
- Free
The outline, topic by topic
Each topic is weighted the way the exam weighs it.
- Concepts
- Questions
- Sort and link
- The numbers
- Scenarios
A few cards from the deck
Level A: what is it?
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The first and lowest conformance step: the requirements without which some users simply cannot reach the content.
It holds, for instance, the text alternative for an image, keyboard access and the absence of a keyboard trap. On its own, it still leaves significant obstacles.
What does a page need to be conformant at level AA?
- Meet all the A criteria and all the AA criteria
- Meet only the AA criteria
- Meet the AA criteria and half of the AAA criteria
- Meet most of the A and AA criteria
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Meet all the A criteria and all the AA criteria
Levels stack up and conformance is all or nothing: the criteria of the lower levels count as much as those of the level aimed for, and a majority is not enough.
The three WCAG conformance levels are, from least to most demanding: …, … and AAA.
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The three WCAG conformance levels are, from least to most demanding: A, AA and AAA.
The levels are cumulative: aiming for AA means meeting all the A criteria and all the AA criteria.
Level AA: what is it?
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The middle step that adds, to the basic requirements, those removing the most common barriers, including text contrast and live captions.
It is the usual target of legal texts and specifications: it asks, for example, for 4.5:1 contrast for body text and a visible focus.