ChatGPT Prompt to Create a Brand Style Guide

The brand style guide is the founding document of any visual identity. It defines colors, typography, logos, spacing, and usage rules that ensure brand consistency across all media. Traditionally, its creation requires the involvement of an art director and several costly back-and-forths. With ChatGPT, you can now generate a structured and professional brand style guide in minutes. AI helps you formalize your aesthetic choices, justify each visual decision, and produce a document usable by your creative teams. Whether you are an entrepreneur launching your brand, a designer looking to accelerate your design phase, or a marketing manager needing to frame a project's visual identity, ChatGPT turns your intentions into precise graphic guidelines. The prompt we propose below is designed to extract maximum value from AI: it structures thinking around the essential pillars of a brand style guide, while leaving the flexibility needed to adapt to your sector and brand positioning.

The prompt

ChatGPT

Act as a senior art director specialized in branding and visual identity. Create a complete brand style guide for the following brand:

Brand name: [NAME]
Industry: [INDUSTRY]
Positioning: [e.g., premium, accessible, innovative, artisanal]
Brand values: [3 to 5 key values]
Target audience: [audience description]
Communication tone: [e.g., professional, warm, bold]

The brand style guide must include the following sections:

Color palette: primary, secondary, and accent colors with HEX, RGB, and CMYK codes. Justify each choice in relation to color psychology and positioning.
Typography: main font (headings), secondary font (body text), accent font (quotes/highlights). Specify recommended weights and web-safe alternatives.
Logo: describe the logo's guiding principles (shape, style, symbolism), protection zones, minimum sizes, and authorized versions (color, monochrome, reversed).
Iconography and imagery: recommended photographic style, illustration style, filters or visual treatments to apply.
Layout: layout grid, margins, spacing, visual hierarchy of elements.
Usage rules: prohibitions (what should never be done with the visual elements) and best practices.

Present everything in a structured and professional format, ready to be handed over to a designer for execution.

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Why it works

This prompt works because it assigns a precise expert role to ChatGPT (senior art director), which activates a specialized and technical response register. The numbered section structure forces an exhaustive and organized output, while the bracketed variables allow full customization without ambiguity. Finally, the request for justification for each choice pushes the AI to produce reasoned recommendations rather than generic suggestions.

Expected result

You will get a structured document of 1500 to 2500 words detailing each component of your visual identity: color palette with exact codes, precise typographic recommendations, logo principles, photographic guidelines, and layout rules. Each choice will be justified in relation to your positioning and audience. The document will be directly usable by a graphic designer or creative team to produce the final assets.

Variants by level

FAQ

Can ChatGPT really replace a graphic designer to create a brand style guide?

ChatGPT cannot replace a graphic designer but is an excellent pre-production tool. It generates the visual strategy, technical specifications (colors, typography, rules) and justifications for each choice. A designer can then use this document to produce concrete visual assets (vector logo, templates, mockups). AI significantly reduces briefing and iteration time, allowing non-designers to arrive with a precise and well-argued specification.

How to get accurate and consistent color codes with ChatGPT?

To obtain reliable color codes, specify in your prompt the desired format (HEX, RGB, CMYK) and ask ChatGPT to check contrast consistency (WCAG ratio for accessibility). You can then validate the proposed colors using tools like Coolors, Adobe Color, or Contrast Checker. Tip: ask ChatGPT to generate combinations respecting a minimum contrast ratio of 4.5:1 for text on background to ensure accessibility.

Which version of ChatGPT to use for best results on brand style guides?

GPT-4 and GPT-4o produce significantly better results than GPT-3.5 for this type of creative and structured task. They better understand branding nuances, produce more relevant justifications, and better respect the complex structures requested. If you have access to GPT-4 with Canvas mode or image generation, you can even request visual drafts of palettes or moodboards to complement the textual style guide.

How to use this prompt

Copy the prompt with the button above.
Paste it into ChatGPT, Claude or your favorite AI assistant.
Replace the bracketed variables with your details, then refine the result.

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