# Style Guide

> A reference document defining a brand or product's visual rules — colors, typography, logo usage, spacing, and tone — for consistent application.

- Category: Deliverables & Artifacts
- Canonical: https://www.themasterly.com/glossary/style-guide

A style guide codifies the visual and verbal rules of a brand or product: the exact color values, type scale, logo clear-space, imagery style, and often the tone of voice. It exists so that anyone — a new designer, a marketer, an agency — can produce on-brand work without guessing.

A style guide is narrower than a [design system](https://www.themasterly.com/glossary/design-system): it documents *rules and assets* but not the interactive, coded components. It is often the first artifact to come out of a [brand identity](https://www.themasterly.com/glossary/brand-identity) project and the reference every later deliverable checks against.

## In practice

After a rebrand, a startup ships a style guide: exact color values, the type scale, logo clear-space, photography direction, and voice examples with do/don't pairs. A month later the effect is visible in the wild — the sales deck, three landing pages built by a contractor, and the product's empty states all read as one company. Before the guide, every new asset was a small reinvention; after, on-brand became the default instead of an act of heroism.

## Related terms

- [Brand Identity](https://www.themasterly.com/glossary/brand-identity)
- [Design System](https://www.themasterly.com/glossary/design-system)
- [Visual Design](https://www.themasterly.com/glossary/visual-design)

## Learn more

- [Branding service](https://www.themasterly.com/services/branding)

## FAQ

**What's the difference between a style guide and a design system?**

A style guide documents rules and assets — color, type, logo, tone. A design system goes further: working components, tokens, and code that implement those rules. Guides inform; systems enforce.

**What belongs in a startup's first style guide?**

The minimum that prevents drift: logo usage, color values, type scale, spacing basics, and three or four voice examples. A twenty-page philosophy chapter goes unread; a one-pager gets used.

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