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 thanks to artificial intelligence. Gemini, Google's multimodal model, excels at structuring complex documents and generating coherent visual recommendations. By using a well-designed prompt, you can obtain a complete style guide including color palette, typography, logo usage rules, iconography, and layout guidelines. Gemini leverages its deep understanding of graphic design principles, color theory, and current trends to produce professional and well-argued 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.
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 and professional brand style guide for [BRAND_NAME], a company in the [INDUSTRY_SECTOR] 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's 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 of 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)
- Allowed versions (color, monochrome, reversed)
- Prohibited uses
-
Iconography and Imagery:
- Recommended icon style
- Photographic direction (mood, filters, composition)
- Examples of compatible stock photo sites
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Graphic Elements:
- Recurring shapes and patterns
- Illustration style if applicable
- Recommended layout grid
-
Applications:
- Business card
- Email header
- 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 every recommendation.
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Why this prompt works
This prompt leverages 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 a comprehensive and organized output. The variables in brackets allow contextual customization while maintaining a rigorous professional framework, and the request for justification (color psychology, link to values) ensures reasoned rather than arbitrary choices.
Use Cases
Variants
Expected Output
You will obtain a complete brand style guide document of 1500 to 2500 words, structured into seven sections with precise color codes (HEX, RGB, CMYK), a numerical typographic hierarchy, and clear usage rules for each visual element. The result will include formatted tables for quick reading as well as practical recommendations directly applicable to your print and digital materials.
Frequently Asked Questions
Can Gemini generate the visual components of a brand style guide, or just the text?
Gemini has image generation capabilities through Imagen. You can ask it to create mood boards, sample color palette visuals, or app mockups after generating the textual guide. However, for a professional logo or precise vector elements, it's best to use the style guide as a brief for a designer or a specialized tool like Adobe Illustrator. Gemini's strength lies in strategic structuring and well-reasoned recommendations rather than producing production-ready, print-ready files.
How should I adapt the prompt if I already have a logo and some existing visual elements?
Add a section at the beginning of the prompt describing your existing elements: the current logo colors with their HEX codes, the fonts already in use, and any visual elements you want to keep. Then instruct Gemini to build the style guide around these constraints by adding something like: "The style guide should be built around my existing logo, which uses the colors [HEX 1] and [HEX 2]. Keep these colors as the foundation and develop a complete system around them." You can also attach an image of your logo if you are using Gemini in multimodal mode.
What is the difference between a brand style guide generated by Gemini and one created by a professional designer?
A style guide generated by Gemini provides a complete structure, well-reasoned color and font recommendations, and detailed usage rules. It serves as an excellent starting point or a functional document for small organizations. However, a professional designer brings original logo creation, source vector files, pixel-perfect mockups, a unique artistic sensibility, and iterations based on user testing. The optimal approach is to use Gemini for strategic framing and documentation, then bring in a designer for creating the original graphic elements and finalizing the production files.
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