Level ASince WCAG 2.0

1.3.3 Sensory Characteristics

Guideline 1.3: Adaptable – Structure and meaning live in the code – not only in the looks.

What does the rule require?

Instructions do not rely only on shape, colour, size, position or sound. “Click the round button on the right” does not help someone who cannot see it.

How to get it right

Always include the name: “Select ‘Send’ (green button, bottom right)”.

Who benefits most?

Blind people
People with low vision
Deaf people

Official wording

This page explains the rule in simple words. Only the original W3C text is normative.

“Understanding Sensory Characteristics” at W3C (external site)
Techniques in the WCAG Quick Reference (external site)