Buttons in five different shades of blue, forms that change style from one screen to the next and developers rebuilding the same component again and again. These signs are common in products that grew fast. The solution adopted by companies such as Google, IBM and Shopify has a name: the design system. In this guide, we explain what is a design system, what it is made of and how to create your own.
What is a design system
A design system is a set of standards, reusable components and guidelines that shapes how digital products are built. It works as a single source of truth for designers and developers.
It is worth distinguishing it from two related concepts:
- Style guide: defines only visual identity, such as colors, fonts and logo.
- Component library: gathers ready-made interface elements, but not always with usage rules.
- Design system: includes both and adds principles, documentation, governance and code.
What a design system is made of
1. Principles
These are the ideas that guide decisions. For example: "clarity over decoration" or "accessible by default".
2. Design tokens
Tokens are the smallest visual decisions, stored as variables: colors, font sizes, spacing, border radii and shadows. As a result, changing one token updates every screen consistently.
3. Components
Buttons, inputs, modals, tables and menus built once, with defined variants and states: default, focus, disabled and error.
4. Usage patterns
Recommended solutions for recurring problems, such as sign-up forms, empty states, error messages and confirmation flows.
5. Documentation
It explains when to use and when not to use each component, with visual examples and code snippets. Tools such as Storybook and Zeroheight are widely used for this.
Benefits
- Consistency: the experience stays uniform across screens and platforms.
- Speed: new features are assembled from ready-made pieces.
- Less rework: fixes made in a component propagate to the whole product.
- Accessibility: best practices built into components benefit every screen.
- Communication: designers and developers start speaking the same language.
Famous examples
- Material Design by Google.
- Carbon by IBM.
- Polaris by Shopify.
- Fluent by Microsoft.
Studying these systems helps you understand how to document and organize your own, even at a smaller scale.
How to create a design system
- Run an inventory: capture existing screens and list every variation of buttons, colors and fonts.
- Define tokens: consolidate the palette, type scale and spacing.
- Start with the most used components: buttons, form fields and cards usually deliver the biggest immediate gain.
- Build in design and code: keep Figma and the code library in sync.
- Document: record usage rules, examples and accessibility guidance.
- Set up governance: who approves changes, how to version and how to announce updates.
Common mistakes
- Trying to build everything at once before delivering any value.
- Creating the library only in Figma, with no code equivalent.
- Not assigning an owner for maintenance.
- Treating the design system as a project with an end date rather than an ongoing product.
Frequently asked questions
Do small companies need a design system?
They do not need a complete one. However, even a lean set of tokens and basic components already brings consistency and speed.
Can I use an existing design system?
Yes. Libraries such as Material UI, DaisyUI and shadcn/ui are great starting points that you can adapt to your brand.
Conclusion
Knowing what a design system is is the first step toward scaling a digital product with quality. Tokens, components and documentation work together to ensure consistency and faster delivery. If you want to create or organize your product's design system, WDS Developer can help from Figma to code.
