READable

 

Components of Accessibility

There are four main components of accessibility:

PERCEIVABLE

Information and user interface

components are presented to

users in a way that are easy

to perceive.

 

UNDERSTANDABLE

Information and the operation

of the user interface must be

easy to comprehend.

 

OPERABLE

User interface components and

navigation must be functional

and useful either by the end-user

directly or by accessibility tools

and software.

 

ROBUST

Content must be robust enough

that it can be interpreted

reliably by a wide variety of user

agents, including assistive technologies.