Gemini Prompt to Create a Brand Style Guide
Creating a brand style guide is a fundamental step for any brand wishing to establish its visual identity. Traditionally entrusted to experienced designers, this task can now be greatly facilitated with the help of artificial intelligence. Gemini, Google's multimodal model, excels at structuring complex documents and generating coherent visual recommendations. Using a well-crafted prompt, you can obtain a complete brand style guide including color palette, typography, logo usage rules, iconography, and layout guidelines. Gemini relies on its deep understanding of graphic design principles, color theory, and current trends to produce professional and reasoned recommendations. Whether you are an entrepreneur launching your brand, a designer looking for a solid starting point, or a marketing manager needing to formalize an existing identity, these prompts will save you considerable time while ensuring visual consistency across all your communication materials.
The prompt
Act as a senior art director specializing in branding and visual identity. Create a complete and professional brand style guide for [BRAND NAME], a [INDUSTRY] company whose values are [VALUE 1, VALUE 2, VALUE 3] and which targets [TARGET AUDIENCE].
The guide must include the following sections:
-
Visual philosophy: Explain the chosen art direction and how it reflects the brand values.
-
Color palette:
- Primary color with HEX, RGB, and CMYK codes
- Secondary color with the same codes
- 2 to 3 accent colors
- Neutral colors (background, text)
- Justification for each color choice in relation to color psychology
-
Typography:
- Heading font (with free Google Fonts alternative)
- Body text font
- Optional accent font
- Typographic hierarchy (H1 to H4, body, caption) with recommended sizes
-
Logo:
- Usage rules (clear space, minimum size)
- Authorized versions (color, monochrome, reversed)
- Prohibited uses
-
Iconography and imagery:
- Recommended icon style
- Photography direction (mood, filters, composition)
- Examples of compatible stock image banks
-
Graphic elements:
- Recurring shapes and patterns
- Illustration style if applicable
- Recommended layout grid
-
Applications:
- Business card
- Email signature
- Social media post
- Sample web page
Format everything in a structured manner with tables for color codes and typographic sizes. Be precise and actionable in each recommendation.
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Why it works
This prompt uses role-play (senior art director) to activate Gemini's specialized knowledge in design and branding. The ultra-detailed structure with seven numbered sections eliminates ambiguity and forces an exhaustive and organized output. The variables in brackets allow contextual customization while maintaining a rigorous professional framework, and the request for justification (color psychology, link with values) ensures reasoned rather than arbitrary choices.
Expected result
Variants by level
FAQ
Can Gemini generate the visuals of the brand style guide in addition to the text?
How to adapt the prompt if I already have a logo and some existing visual elements?
What is the difference between a brand style guide generated by Gemini and one from a professional designer?
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.
About Prompt Guide
Prompt Guide is a free library of 4800+ ready-to-use prompts for ChatGPT, Claude and other AIs, with guides to learn prompting and tools to build and optimize your own prompts.
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