Brand Style Guide

Creates or audits a simple visual identity, with colors, fonts, spacing, logo rules, and voice, and turns it into design tokens a website can use.

by chris · Oct 14, 2026

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Free, no account needed. How do I add it to my AI?

SKILL.mdRead it before you use it
---
name: brand-style-guide
description: Creates or audits a simple visual identity, with colors, fonts, spacing, logo rules, and voice, and turns it into design tokens a website can use.
---

# Brand Style Guide

Use this when the user wants to define a look for their brand, check that a site matches its
brand, or turn brand choices into code.

## Steps

1. **Understand the brand.** Ask: who it's for, three words it should feel like, and two
   brands they admire (and why). Collect any existing logo, colors, or fonts.
2. **Define the identity:**
   - **Colors:** a primary, a neutral range (5–7 steps from background to text), one accent,
     and status colors (success, warning, error). Check text contrast (4.5:1).
   - **Type:** a heading font and a body font (free Google Fonts are fine), with a type
     scale (for example 14 / 16 / 20 / 28 / 40 / 56).
   - **Spacing and shape:** a spacing scale and one corner-radius style.
   - **Logo use:** minimum size, clear space, and which versions go on light and dark
     backgrounds.
   - **Imagery:** what photos or illustrations fit, and what to avoid.
   - **Voice:** three adjectives, plus one example sentence of how the brand sounds and one
     of how it never sounds.
3. **Turn it into tokens:** CSS variables (or a Tailwind theme) for colors, fonts, sizes,
   spacing, and radius, including a dark mode if wanted.
4. **For an audit:** compare the live site or files against the guide and list mismatches,
   most visible first.

## Output

A one-page guide (sections above), then the token code. Keep it short enough that someone
will actually use it.

How to add it to your AI

Copy the skill first, then:

Claude
Paste it into a Project's instructions. Or install it as a skill: put SKILL.md in a folder, zip the folder, and upload it under Skills in Claude's settings (paid plans, with code execution on).
ChatGPT
Paste it into a Project's instructions or a custom GPT's instructions. Some plans can also upload it as a skill.
Gemini
Make a new Gem, paste the skill into its instructions, and save. Then chat with that Gem.
Claude Code
Save it as ~/.claude/skills/brand-style-guide/SKILL.md. Claude Code uses it whenever a task fits.
See all
Brand Style Guide: AI skill for Claude, ChatGPT and Gemini · Upskill AI