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UX Atlas
TermCraft conventionFoundational

Colour Vision Deficiency

Difficulty telling some colours apart, affecting around one in twelve men.

Definition

Reduced ability to distinguish certain colours, most commonly in the red and green range.

Craft convention. True because the industry converged on it. Breaking it costs familiarity, not correctness.

In plain language

Difficulty telling some colours apart, affecting around one in twelve men.

Example

A red and green status system is indistinguishable to a substantial share of users without labels or icons.

Each link says what the connection is, so you can tell a principle from an alternative from a thing people mix this up with.

Deeper reading

The full entry behind this definition.

Nearby in the Atlas

Adjacent territory, found through shared tags rather than a stated link.