Use AI to Precisely Control Color and Generate Brand-Exclusive Geometric Visuals
The core of any visual identity system is color consistency. In many AI workflows, color output can drift, making brand assets hard to standardize. With Wan 2.7 Image custom Color Palette, you can define 3-10 exact colors and guide generation to stay aligned with your brand language. In this tutorial, we share the full parameter setup and production workflow on /home/wan/2-7-image.
I. What Is Custom Color Palette?
Custom color palette (colorPalette) is a control feature that constrains image generation to your specified color set. Compared with default free-color generation, this mode provides:
- Color precision: prioritizes only the colors you provide.
- Brand consistency: outputs align with visual identity standards.
- Style uniformity: ideal for batch-ready campaign assets.
Recommended Scenarios
| Scenario | Description |
|---|---|
| Brand visuals | Posters, banners, and social graphics with strict brand tones. |
| Geometric abstract art | Wall art, wallpapers, decorative visuals, editorial backdrops. |
| UI/UX assets | Backgrounds, icon families, abstract interface motifs. |
| Print design | Business cards, brochures, packaging concept visuals. |
II. Core Parameters (Copy & Paste)
{
"model": "wan-2-7-image",
"prompt": "A minimalist geometric abstract composition. Use only the provided color palette. The design should feature overlapping circles, triangles, and rectangles. Clean lines, modern aesthetic, suitable for wall art or branding. No gradients, no additional colors.",
"aspectRatio": "1:1",
"n": "1",
"resolution": "2K",
"enableSequential": false,
"thinkingMode": false,
"colorPalette": [
{ "hex": "#1A365D", "ratio": "12.50%" },
{ "hex": "#2B6CB0", "ratio": "12.50%" },
{ "hex": "#4299E1", "ratio": "12.50%" },
{ "hex": "#63B3ED", "ratio": "12.50%" },
{ "hex": "#90CDF4", "ratio": "12.50%" },
{ "hex": "#BEE3F8", "ratio": "12.50%" },
{ "hex": "#EBF8FF", "ratio": "12.50%" },
{ "hex": "#E2E8F0", "ratio": "12.50%" }
],
"watermark": false,
"seed": "789"
}
Parameter Breakdown
| Parameter | Setting | Purpose |
|---|---|---|
colorPalette | 8 blue tones | Precise color control; 6-8 tones are practical for brand systems. |
prompt | "Use only the provided color palette" | Explicitly reduces off-palette color introduction. |
resolution | 2K | High output quality for web, social, and presentation use. |
seed | 789 | Improves reproducibility during iterative refinement. |
III. How to Choose Palette Colors
Core Rules
- Count: 3-10 colors; 6-8 usually balances control and variety.
- Tonal layers: include dark, mid, and light values.
- Brand priority: start from primary and secondary brand colors.
- Format: use HEX codes (for example,
#1A365D).
Example: Blue Brand Palette
| Color Tier | HEX | Typical Use |
|---|---|---|
| Deep navy | #1A365D | Primary anchor / deep background |
| Mid-deep blue | #2B6CB0 | Main shape blocks |
| Mid blue | #4299E1 | Secondary geometry |
| Light blue | #63B3ED | Highlights and accents |
| Very light blue | #90CDF4 | Soft background layer |
| Pale blue | #BEE3F8 | Auxiliary light areas |
| Near white blue | #EBF8FF | Whitespace and contrast zones |
| Neutral light gray-blue | #E2E8F0 | Neutral transition regions |
IV. Result Preview and Effect Analysis
Generated geometric abstract image:
Evaluation
| Dimension | Rating | Notes |
|---|---|---|
| Color precision | ⭐⭐⭐⭐⭐ | Strong adherence to the 8 specified palette colors. |
| Composition quality | ⭐⭐⭐⭐⭐ | Clean layered circles, triangles, and rectangles. |
| Brand usability | ⭐⭐⭐⭐⭐ | Directly usable for brand visual systems. |
| No extra color drift | ⭐⭐⭐⭐⭐ | No obvious off-palette colors introduced. |
V. Color-Palette Use Cases by Industry
| Scenario | Palette Strategy | Prompt Keywords |
|---|---|---|
| Tech brand | Blue-purple gradients | futuristic, data visualization, abstract tech |
| Eco brand | Green-focused tones | organic shapes, nature-inspired, leaf patterns |
| Fashion brand | Black-white-gray with one accent | elegant, minimalist, high fashion |
| Kids brand | Bright warm palette | playful, colorful, cheerful, cartoon style |
VI. Advanced Workflow: From One Image to a Full Asset Series
- Lock the palette: reuse the same
colorPaletteacross all generations. - Vary composition only: keep colors fixed, change geometric instructions in prompt.
- Batch generation: set
n=4for multiple layout variants in one run. - Output quality: 2K is practical for web/social; scale as needed for print workflows.
VII. Summary
Custom color palette is one of the most practical controls for brand-focused AI image production. By constraining color usage, you can maintain visual identity consistency across campaigns with minimal post-correction. Use this parameter set as a reusable brand visual template, then fine-tune HEX values and composition prompts for each project.