Start with foundations, not components
Before building buttons and cards, define your design tokens: color palettes, typography scales, spacing units, and border radii. These atomic decisions cascade through every component.
When foundations are weak, teams invent one-off styles that create visual debt. When foundations are strong, consistency becomes the default — not a manual checklist.
- Color tokens with semantic naming (surface, text, accent, danger)
- Type scale tied to product hierarchy, not random font sizes
- Spacing rhythm that works across dense SaaS and marketing UI
Document usage, not just appearance
A component library without documentation creates more confusion than clarity. Each component should explain when to use it, when not to use it, and how it behaves across states.
- Default, hover, focus, disabled, loading, and error states
- Do / don't examples for common misuse
- Accessibility notes for keyboard and screen reader behavior
Governance keeps systems alive
Design systems decay without ownership. Assign a maintainer, establish a contribution process, and schedule regular audits.
As your product evolves, your system should evolve with it — adding new patterns, deprecating outdated ones, and keeping designers and developers aligned.
Key takeaways
- Tokens first, components second, documentation always.
- Ship fewer components with clearer rules rather than endless variants.
- Assign ownership or the system will quietly die.
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