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Typography Color Accessibility

Plain Language

Plain Language turns a frequent interface judgment into an executable constraint before generation.

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Design Principle

Understandability is part of accessibility; complex copy increases cognitive load for everyone.

Principle

Understandability is part of accessibility; complex copy increases cognitive load for everyone.

Design action

Describe objects and actions in user language; buttons use verb plus object, and errors explain cause plus fix.

Examples

Positive example: Empty states, errors, settings, wizards, hints, and confirmation dialogs require decisions. Counterexample: Internal system names or abstract marketing terms are used.

Apply when

Empty states, errors, settings, wizards, hints, and confirmation dialogs require decisions. Users need to judge state, scope, risk, or next action quickly.

Source notes

Source note: Synthesized from W3C WCAG 2.2, Apple Accessibility, IBM Carbon Accessibility, and accessibility practices in major design systems.

Agent Directive

Describe objects and actions in user language; buttons use verb plus object, and errors explain cause plus fix.

Apply When

  • Empty states, errors, settings, wizards, hints, and confirmation dialogs require decisions.
  • Users need to judge state, scope, risk, or next action quickly.

Avoid

  • Internal system names or abstract marketing terms are used.
  • Irrelevant structure, copy, or decoration is added only to make the UI feel richer.

Knowledge Metadata

Category
Typography Color Accessibility
Quality
84%
Version
v1
Published
6/6/2026