Expo Design Systems

Make every screen in an app draw from one visual source of truth: a token theme and a small set of reusable components. This skill defines where tokens live, what they cover, how reusable components are shaped, and when a repeated view earns promotion into the system.

Sibling skills own the layers around this one:

• expo-native-ui - platform styling rules (HIG, semantic colors, controls, shadows syntax). Follow it for what values look native; follow this skill for where values live and how they're reused.
• expo-project-structure - folder skeleton for new apps.

For Tailwind projects, keep tokens in global.css as CSS variables and follow the styling library's own setup guidance. The scales and naming in this skill still apply; only the storage format changes.

References

Consult these resources as needed: