What is WCAG?
WCAG, the Web Content Accessibility Guidelines, is the international standard for making websites accessible to people with disabilities.
Definition
Published by the W3C, WCAG sets testable criteria in levels A, AA and AAA, covering contrast, keyboard use, text alternatives, structure and more. Most organisations aim for level AA.
Why it matters
Accessible sites work for more people, are often a legal requirement, and tend to be clearer for everyone.
How to get it right
- Text contrast of at least 4.5:1 (3:1 for large text).
- Alt text for meaningful images.
- Everything usable with a keyboard.
- Proper headings and labels.
Mistakes to avoid
- Pale grey text on white
- Information shown by colour alone
- Buttons without accessible names
Related terms
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More design terms
Questions, answered.
The things people ask before they start building.
What is WCAG?
WCAG, the Web Content Accessibility Guidelines, is the international standard for making websites accessible to people with disabilities. Published by the W3C, WCAG sets testable criteria in levels A, AA and AAA, covering contrast, keyboard use, text alternatives, structure and more. Most organisations aim for level AA.
Why does WCAG matter?
Accessible sites work for more people, are often a legal requirement, and tend to be clearer for everyone.
How do you get wcag right?
Text contrast of at least 4.5:1 (3:1 for large text). Alt text for meaningful images. Everything usable with a keyboard. Proper headings and labels.
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