Canon / brand

rule.brand.content-design · canon

Content design is a product surface

Voice, tone matrix, glossary, and error copy are required design deliverables.

Guidance

Errors name problem+recovery; glossary forbids overloaded terms; tone matrix covers onboarding/empty/error/success/destructive.

Verification contract

content-design + voice-tone modules linked

Supporting references

• ref.atlassian.content — Atlassian Content Design
• ref.duolingo.brand-narrative — Duolingo Design — Brand narrative system
• ref.duolingo.design — Duolingo Design (Brand Guidelines hub)
• ref.duolingo.writing-duo — Duolingo Design — Character verbal contract
• ref.duolingo.writing-glossary — Duolingo Design — Canonical and prohibited terms
• ref.duolingo.writing-style — Duolingo Design — Editorial style rules
• ref.duolingo.writing-tone — Duolingo Design — Contextual tone matrix
• ref.duolingo.writing-voice — Duolingo Design — Stable voice qualities
• ref.ibm.carbon-content — Carbon Content Guidelines
• ref.ibm.carbon — Carbon Design System
• ref.shopify.polaris — Shopify Polaris
• ref.smarthr.design — SmartHR Design System

Implementations and verification artifacts

• artifact.component.callout — Callout component · packages/react/src/components/Status.tsx
• artifact.doc.content-design — Voice tone matrix doc · design-system/brand/voice-tone-matrix.md