A brand style guide is the document that keeps your identity looking like one coherent thing as more people — employees, freelancers, print shops, ad agencies — touch it over time. A thorough one covers more than most people expect.
Logo usage
- Primary logo, plus icon-only and horizontal variations.
- Clear space and minimum size rules.
- Approved backgrounds, and explicit "don'ts" (stretching, recoloring, adding effects).
Color system
Every brand color with its exact values — HEX for digital, RGB for screen, CMYK and/or Pantone for print — so color stays consistent no matter who's using it or where.
Typography
Primary and secondary typefaces, with clear rules for headlines versus body text, and fallback fonts for contexts (like email) where the brand font isn't available.
Imagery and iconography
A defined photography or illustration style, and rules for icon style if icons are part of the system — this keeps visual tone consistent even across content the original designer never touches.
Voice and tone (in more thorough guides)
A short section on how the brand sounds in writing — formal or casual, what words to use or avoid — so marketing and customer-facing copy stays consistent with the visual identity.
The short version
A real style guide covers logo rules, exact color values, typography, imagery style, and ideally voice — not just a logo file with no instructions attached. If your last branding project didn't include one, it's worth having built.