This conformance level is used in most accessibility rules and regulations around the world, including the ADA. To meet WCAG 2.0 Level AA conformance, the website is usable and understandable for the majority of people with or without disabilities. The meaning conveyed and the functionality available is the same. Your site may not be WCAG 2.0 AA compliant yet, but a few simple updates can help you get there. A WCAG checklist can help you go through the requirements in an organized way and take them on one at a time.
Some notable WCAG 2.0 Level AA requirements include:
- Color contrast is, in most instances, at least 4.5:1
- Alt text or a similar solution is used for images that convey meaning
- Navigation elements are consistent throughout the site
- Form fields have accurate labels
- Status updates can be conveyed through a screen reader
- Headings are used in logical order
There are 20 Level AA guidelines
1.2 Time-based Media
Provide alternatives for time-based media.
Success Criterion 1.2.4 Captions (Live):
Success Criterion 1.2.5 Audio Description (Prerecorded):
Create content that can be presented in different ways (for example simpler layout) without losing information or structure.
Success Criterion 1.3.4 Orientation (AA)
Success Criterion 1.3.5 Identify Input Purpose (AA)
Make it easier for users to see and hear content including separating foreground from background.
Success Criterion 1.4.3 Contrast (Minimum):
Success Criterion 1.4.4 Resize Text:
Success Criterion 1.4.5 Images of Text:
Success Criterion 1.4.10 Reflow (AA)
Success Criterion 1.4.11 Non-Text Contrast(AA)
Success Criterion 1.4.12 Text Spacing(AA)
Success Criterion 1.4.13 Content on Hover or Focus(AA)
Provide ways to help users navigate, find content, and determine where they are.
Success Criterion 2.4.5 Multiple Ways:
Success Criterion 2.4.6 Headings and Labels:
Success Criterion 2.4.7 Focus Visible:
Make text content readable and understandable.
Success Criterion 3.1.2 Language of Parts:
Make Web pages appear and operate in predictable ways.
Success Criterion 3.2.3 Consistent Navigation:
Success Criterion 3.2.4 Consistent Identification:
3.3 Input Assistance
Help users avoid and correct mistakes
Success Criterion 3.3.3 Error Suggestion:
Success Criterion 3.3.4 Error prevention (legal, financial, data)
Maximize compatibility with current and future user agents, including assistive technologies.
Success Criterion 4.1.3 status Messages (AA)