Minimum standard. Without achieving "A" standard, it is assumed that there could be a group of people who might not be able to browse the website comfortably.
The desirable standard. If "AA" standard is achieved, there will be less cases of difficulty in browsing websites.
Advanced criteria. A website would be the most accessible to browse if "AAA" standard is achieved.
Levels of conformanceAA
National Library of Australia
Levels of conformanceA
The Department of Infrastructure, Transport, Regional Development, Communications and the Arts
SmartHR Design System
Spectrum, Adobe’s design system
Atlassian Design System
Lightning Design System
Primer Design System
Carbon Design System
Astellas Pharma Inc.
FUJIFILM Holdings Corporation