Web Content Accessibility Guidelines (WCAG)

Overview

The WCAG Guidelines provide Success Criteria for each corresponding standard to create inclusive digital environments; particularly so people with disabilities have the broadest possible access to content and services.

  • UTMB's standard is WCAG 2.1 Level AA compliance. 
  • However, you can try to remove as many barriers as possible, by aiming for WCAG 2.2 Level AAA whenever possible.
  • The guideline are organized into four principles; Perceivable, Operable, Understandable, and Robust (POUR).

Did you know? Accessibility History

Web Content Accessibility Guidelines (WCAG) have been around since 1999.

WCAG's Four Principles

Conformance levels

There are three levels of conformance.

  • Level A (minimal conformance) - meets all of the Level A requirements in full, or a conforming alternate version is provided 
  • Level AA (average conformance) - meets all of the Level A and Level AA requirements in full, or a conforming level AA alternate version is provided 
  • Level AAA (most inclusive conformance) - meets all of the Level A, Level AA, and Level AAA requirements in full, or a conforming Level AAA alternate version is provided 

Unfortunately, even with the conformance levels, there are multiple way to make applications or content accessible.

  • These guidelines apply broadly over all types of digital content and technology.
  • Because conformance can be interpreted, it falls to UTMB to create and document its policies and best practices.

Other helpful resources from the Digital Accessibility Hub.

Questions?

Last updated: August 21, 2026