Understanding what a brand style guide contains: 7 components that keep your identity consistent

A brand style guide is a reference document that records the visual and verbal rules of your brand identity. It tells anyone creating material for your organisation—designers, marketers, printers, web developers—exactly how logos, colours, typography and tone of voice should be used. The first or second time you read it through, you learn what your brand looks like and sounds like; after that, you return to it whenever a new project starts. Visit Black Dog Design for more on how graphic design and branding work together.

Deciding what belongs in your brand guidelines

Start with the elements that appear most often. Your logo comes first: every approved version, the minimum size it can be reproduced at, the clear space around it and the backgrounds it may sit on. Colour follows—your primary palette with exact specifications, then secondary or accent colours if you use them. Typography comes next: the typefaces for headings, body text and any special applications, with notes on weight and size. Brand voice and tone describe how your organisation speaks, whether that is formal, conversational or technical.

Beyond these, consider imagery style—photography, illustration or iconography—and layout principles such as grid systems or white space. Not every brand needs all of these from day one. A small business may start with logo, colour and typeface rules, then add sections as the organisation grows.

Writing logo usage rules that protect your identity

The logo section of your brand guidelines shows every version you have—full-colour, single-colour, reversed-out for dark backgrounds—and states which one to use when. Minimum size matters: reproduce a logo too small and detail disappears or text becomes illegible. Clear space, often defined as a multiple of a letter height or a graphic element within the logo itself, stops other design elements crowding it.

Document what not to do as well. Show examples of stretched, recoloured or over-complicated versions alongside a note that these are incorrect. A supplier working to deadline will make a practical decision; explicit "don't" examples prevent mistakes before they reach print or screen.

Specifying colour so it reproduces accurately

Each brand colour needs three or four values: RGB for screens, CMYK for print, a Pantone reference where exact matching matters, and a hex code for web design. Record these in a table so nobody has to guess. Screens and print handle colour differently, and a shade that looks vibrant on a monitor may flatten or shift when printed on uncoated stock. Your brand guidelines cannot prevent every variation, but they give the starting point.

State which colour is primary and which are accents. Not every piece of brand material uses the full palette; guidance on hierarchy prevents a design becoming too busy. For more detail on how these colour models differ, read our article on understanding RGB and CMYK.

Choosing and documenting typefaces for every application

Your brand guidelines name the typeface or font family for headlines, body copy and any special uses such as captions or data tables. Include the weights you use—light, regular, bold—and note whether the typeface is licensed or freely available. A designer picking up the project needs to know where to source the font and whether there are restrictions on embedding it in a PDF or a website.

Give examples of hierarchy: what size and weight a main heading takes, how subheadings differ, what line spacing works for readability. Real sentences set in your chosen typeface demonstrate how it performs at different sizes and on different backgrounds. If your brand uses a web-safe fallback for email or environments where custom fonts cannot load, record that alternative here. Our guide to what kerning does explains one aspect of typographic refinement that matters once your fonts are in place.

Defining brand voice so your organisation sounds like itself

Brand voice is how your organisation speaks across every piece of writing—website copy, social media, reports, customer service. Your style guide describes this in plain terms: whether the tone is warm or neutral, whether you address the reader as "you" or keep distance, how technical language is handled, and which words or phrases to avoid. Concrete examples help more than abstract labels. Show a sentence written in your brand voice next to one that does not fit, and the difference becomes clear.

Separate voice from tone: voice stays constant, while tone adjusts to context. A message about a service interruption will be more direct than a product launch announcement, but both should still sound like your organisation. For a fuller treatment of how brand voice works in practice, read our guide to defining how your organisation sounds.

Recording image style and treatment

If your brand uses photography, describe the style—natural light or high-contrast, people or objects, composed or candid—and show examples that fit alongside examples that do not. The same principle applies to illustration, iconography or any other visual element. Consistency in imagery style reinforces brand recognition just as effectively as a repeated colour or typeface.

Note any treatments applied to images: cropping ratios, filters, overlays or frames. A duotone effect or a border weight may seem like a small detail, but applied consistently it becomes a recognisable part of your identity. If your brand uses vector graphics for icons or illustrations, explain the line weight, corner style and level of detail. Our article on vector graphics and how they strengthen your brand covers why this format suits identity work.

Building your first style guide in practical steps

Creating brand guidelines does not require specialist software or a large budget. You need clarity about your brand and a way to document it that others can follow. Here is how to approach it:

1. Gather your brand assets. Collect logo files in every format you have, note the exact colours you use, and identify your typefaces. If any element is inconsistent—your logo exists in several versions with no clear original, or your website uses colours your print material does not—resolve that before documenting.
2. Write down what you already do. Look at recent projects and describe the decisions you made: why this typeface, why that spacing, which logo version on a dark background. This becomes the foundation of your usage rules.
3. Organise the document in the order people will use it. Logo and colour come first because they appear in almost every application; typography and voice follow. Keep each section short and show examples.
4. Test the guidelines with someone outside your team. Ask a designer or supplier to create something simple—a business card, a social media graphic—using only the style guide. Where they hesitate or make an incorrect choice, your documentation needs more detail or clearer examples.
5. Treat it as a working document. Brand guidelines are not fixed forever. As your organisation changes or new applications emerge, update the guide and communicate those changes to everyone who uses it.

Keeping the style guide accessible and up to date

A brand style guide only works if people can find it and use it. Distribute it as a PDF, publish it on an internal wiki or host it as a simple website—whatever fits how your organisation shares documents. Make sure suppliers, freelancers and new team members receive a copy as part of onboarding.

Set a reminder to review the guide once a year. Check whether new platforms or formats have appeared—your brand may now need rules for video thumbnails, app icons or email signatures that did not exist when the guide was written. Update colour values if you have moved to a new print supplier whose press handles CMYK differently. Version the document and note the revision date so everyone knows they are working from the current file.

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