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What is a design system, and why is it helpful?

Short answer

A design system is a shared set of rules and reusable parts for building a website. It covers colors, type, buttons, forms and page sections, with usage guidance. It keeps every page consistent, makes new pages faster to build and makes a future rebrand far easier.

In this answer
  1. 01What a design system contains
  2. 02Why a small business benefits
  3. 03A design system behind a CMS
  4. 04How we build them

What a design system contains

Nielsen Norman Group defines a design system as a complete set of standards for managing design at scale with reusable components and patterns. It usually has three layers.

Three layers of a design system
  1. PatternsWhole sections and page templates built from components.
  2. ComponentsButtons, forms, cards and menus, each with usage rules.
  3. Style guideColors, type, spacing and tone of voice.

Why a small business benefits

Design systems sound like a big-company tool, but the benefits scale down well.

  • Every page looks and works the same way.
  • New pages reuse sections instead of fresh design.
  • Visitors learn the site once and move faster.
  • A rebrand updates the system, not every page by hand.

Consistency also helps usability. Nielsen Norman Group's heuristic on consistency explains that people should not wonder whether different words or buttons mean the same thing.

A design system behind a CMS

The real payoff comes when the system lives inside your CMS. Each page type becomes a set of sections your team fills in. They cannot break the layout, and every new page matches the rest.

Good example. A cleaning company adds a new city page by picking sections like hero, services, reviews and FAQs, then writing the content. It looks finished on day one.

Bad example. The same company copies an old page and edits the code by hand. It ends up with a third button style and broken spacing on phones.

How we build them

Every site we build comes with its own design system and a section library in the CMS. Rathly.com runs on one, with every section editable and every page sharing the same parts. Read what a CMS is.

Our web design projects deliver the system with the site, so it keeps paying off after launch.

Keep reading

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