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.
Tokyo Medical University
Levels of conformanceA
The Open University
Niigata University Medical & Dental Hospital
United States Department of State
University of Birmingham
The family of art, design and performance museums · V&A
Natural History Museum
Levels of conformanceAA
Mitsumura Tosho Publishing Co.,Ltd.