Color blindness
Example: A neighborhood cafe used green for available tables and red for booked ones, until a contrast simulator showed that to a guest with deuteranopia the two merged into one color, so it added text labels alongside the colors.
why two distinct brand colors can collapse to one
A set of inherited vision conditions — protanopia, deuteranopia, tritanopia, and milder partial forms — in which one of the three cone-cell types is missing or weakened. The eye no longer distinguishes certain hue pairs (most commonly red from green), even when they look obviously different to other readers.
Why it matters
Roughly 8% of men and 0.5% of women experience some form. A palette that grades AA on luminance can still merge a "go" green into a "stop" red for a deuteranope, sinking accessibility despite passing automated checks. Brand Suite includes a Brettel/Viénot simulation toggle on its contrast grid so the math gets a vision-model sanity check too.
Frequently asked
What is color blindness?
Color blindness is a set of inherited vision conditions — protanopia, deuteranopia, tritanopia, and milder partial forms — in which one of the three cone-cell types is missing or weakened. The eye no longer distinguishes certain hue pairs (most commonly red from green), even when they look obviously different to other readers.
Why does color blindness matter for a restaurant?
Roughly 8% of men and 0.5% of women experience some form. A palette that grades AA on luminance can still merge a "go" green into a "stop" red for a deuteranope, sinking accessibility despite passing automated checks. Brand Suite includes a Brettel/Viénot simulation toggle on its contrast grid so the math gets a vision-model sanity check too.
- Brand identity — the full visible system around your logo
- Logo lockup — mark + wordmark + optional tagline, as one unit
- Clearspace — the empty zone around a logo
- Color palette — the curated set of colors that belong to your brand
- WCAG AA contrast — accessible color contrast
- Favicon — the small icon in the browser tab
Browse all
149 terms.
Plain-English definitions for every term in your audit, organized by category.