ChatGPT Prompt to Create a Brand Style Guide
The brand style guide is the foundational document for any visual identity. It defines colors, typography, logos, spacing, and usage rules that ensure brand consistency across all media. Traditionally, its creation requires a creative director and costly back-and-forth. With ChatGPT, you can generate a structured and professional style guide in minutes. AI helps you formalize your aesthetic choices, justify each visual decision, and produce a document your creative teams can use. Whether you are an entrepreneur launching your brand, a designer speeding up the conception phase, or a marketing manager needing to frame a project's visual identity, ChatGPT turns your intentions into precise graphic guidelines. The prompt below is designed to extract maximum value from AI: it structures thinking around the essential pillars of a style guide, while leaving flexibility to adapt to your sector and brand positioning.
Paste in your AI
Paste this prompt in ChatGPT, Claude or Gemini and customize the variables in brackets.
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: [description of audience]
- Communication tone: [e.g. professional, warm, bold]
The style guide must include the following sections:
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Color palette: primary color, secondary color, and accent colors with HEX, RGB and CMYK codes. Justify each choice based on color psychology and positioning.
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Typography: main font (headings), secondary font (body text), accent font (quotes/highlights). Specify recommended weights and web-safe alternatives.
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Logo: describe the guiding principles of the logo (shape, style, symbolism), clear space, minimum sizes, and authorized versions (color, monochrome, reversed).
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Iconography and imagery: recommended photographic style, illustration style, filters or visual treatments to apply.
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Layout: layout grid, margins, spacing, visual hierarchy of elements.
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Usage rules: prohibited actions (what must never be done with visual elements) and best practices.
Present everything in a structured and professional format, ready to be handed off to a designer for execution.
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Why this prompt 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 for total personalization without ambiguity. Finally, the request for justification for each choice pushes the AI to produce reasoned recommendations rather than generic suggestions.
Use Cases
Variants
Expected Output
You will obtain 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 final assets.
Frequently Asked Questions
Can ChatGPT really replace a graphic designer for creating a brand style guide?
ChatGPT doesn't replace a graphic designer but serves as an excellent pre-production tool. It generates the visual strategy, technical specifications (colors, typography, rules), and the rationale behind each choice. A graphic designer can then use this document to produce the concrete visual assets (vector logo, templates, mockups). AI significantly reduces the briefing and iteration time, allowing non-designers to arrive with a precise, well-argued creative brief.
How do I get precise and consistent color codes with ChatGPT?
To get reliable color codes, specify the desired format (HEX, RGB, CMYK) in your prompt and ask ChatGPT to verify the 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 that meet a minimum contrast ratio of 4.5:1 for text on a background to ensure accessibility.
Which version of ChatGPT should I use for the best brand style guide results?
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, generate more relevant justifications, and adhere more closely to complex requested structures. 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 text-based style guide.
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- LéaAI
Pour un résultat plus concret, précisez vos préférences dans chaque section (ex. « palette froide », « typo sans-serif »). Variante utile : demandez 3 options par élément (palettes, polices, styles) avec un argumentaire comparatif, puis synthétisez.
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