Brand guidelines: what to include so people and AI can follow them

Ask a new designer to find the rule for photo lighting in your brand book. Time them. If it takes longer than a minute, the guidelines are a brochure, not a tool.

Most brand guidelines are made to impress, not to be used. They open with a manifesto, spend twenty pages on the logo, and say almost nothing about the decisions people make every day: which photo to choose, how long a headline can be, whether to say "customers" or "clients".

If your guidelines will be read by freelancers, new hires and AI tools, they need to answer those everyday questions directly. Here is a structure that does.

1. The promise, in one sentence

What does the brand do for whom, and how should people feel after meeting it? One sentence, no adjectives you could swap for a competitor's. Everything else in the guidelines should serve this.

2. Colours, with roles

A palette of hex codes is not enough. For each colour, write its job:

• Primary: the colour of text and the main surfaces.
• Accent: used sparingly, for one thing per layout (a button, a highlight, a single object in a photograph).
• Neutrals: backgrounds, cards, dividers.
• Never: colours that must not appear, and colour pairs that fail contrast.

Add the ratio you expect: mostly neutral, some primary, a little accent. Without it, every designer uses the accent everywhere.

3. Type, as a hierarchy

Name the typefaces, then show the levels: page title, section heading, body, captions, labels. Give each a size range, weight and line height. Say which fonts to use for other scripts (Devanagari, Tamil and so on) if you publish in more than one language.

4. Photography direction

This is where most guidelines are thinnest and where AI images drift furthest. Describe, in words and with examples:

• Light: natural or studio, warm or cool, from which side.
• Setting: where your customers actually work or live.
• People: ages, dress, activity. Real work, not posing.
• Colour in photos: where the brand colour may appear, and where it may not.
• What never appears: stock clichés, symbols you dislike, competitors' products.

Include five photographs you love and five you never want, each with one line explaining why.

5. Voice, with examples

"Friendly but professional" means nothing on its own. Write:

• three to five traits, in order of priority when they pull against each other,
• words and phrases you use, and words you never use,
• one paragraph written in the voice, and the same paragraph written wrongly, side by side,
• rules for numbers, dates, abbreviations and exclamation marks.

6. Layout and logo, briefly

Clear space, minimum sizes, placement on common formats. This section can be short; it is the one people already get right.

7. Decisions log

Keep a running list of real decisions: "Wider crops for blog headers", "No people in product shots", "Tamil copy uses neengal". This becomes the most useful page in the book because it is built from what actually happened.

Make it machine-readable too

AI tools follow written rules better than visual examples. Keep the guidelines as text (a document, not a flattened PDF of images), use clear headings, and state rules as rules: "The accent colour appears on one object per photograph", not "We love a pop of colour".

How Wonib uses your guidelines

Wonib reads a brand from its website or brand book: the colours with their roles, the typefaces, the photography style, the voice and the words to avoid. You can correct anything it learned. From then on it makes every piece in that brand and checks it against these rules before you see it, and what you approve it adds to the brand's record. See what it learns from your website.

Questions people ask

How long should brand guidelines be?

Long enough to answer everyday questions, short enough to read in an afternoon. Many useful guidelines are ten to twenty pages; what matters is that each rule is specific.

What is the difference between brand guidelines and a style guide?

The terms overlap. Brand guidelines usually cover the whole identity (promise, colours, type, photography, voice); a style guide often means the writing rules alone. Keep both in one document so they never disagree.

Does a small business need brand guidelines?

Yes, and a small one helps most: a single page with the colours and their roles, two typefaces, five example photos and ten voice rules prevents most drift.