ガイド
アクセシビリティを損なわずにブランドカラーを確認する方法
ブランドらしさを保ちながら、文字とUIの可読性を確保する実践手順です。
ブランド表現とアクセシビリティは両立できます。単色ではなく使用コンテキストで組み合わせを検証することが重要です。
Separate brand core colors from UI usage colors
Keep master brand colors for identity references.
Create accessible UI variants for text, buttons, and links where needed.
Test combinations, not single swatches
A single color cannot pass or fail by itself.
Always test foreground and background pairs in realistic contexts.
Create approved contrast-safe pair sets
Document which brand pairings are safe for normal text and which are only for large decorative text.
This helps non-design teams choose colors correctly.
Handle gradients and overlays carefully
Text over images or gradients can pass in one area and fail in another.
Add overlays or solid backing when contrast fluctuates.
Document final rules in your design system
Publish do/don't examples and token guidance.
Clear rules reduce accessibility regressions in future campaigns.
Best for
- Brand refreshes.
- Marketing site redesigns.
- Design token migration projects.
Brand and accessibility can work together
By defining accessible usage variants, your team can move faster without repeating color debates on every project.