Appearance Extractor BG3

Analyze an image to extract appearance attributes for UI design and branding, helping teams maintain visual consistency across assets and platforms.

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About This Tool

The tool accepts an image and applies BG3-specific appearance analysis to produce repeatable signals about visual identity. It identifies dominant colors, texture cues, brightness levels, and gradient indicators to inform color decisions and asset alignment. Conceptually, the process treats the image as a data source for design tokens, extracting objective measurements rather than subjective judgments. Designers can use the results to seed palettes, texture references, and contrast targets for interfaces and branding materials. By providing both machine-calculated outputs and a structured data bundle, the tool accelerates collaboration between design and development teams and reduces the need for manual sampling across assets. Use cases include background asset audits, theme generation for dark/light modes, and consistent palette enforcement across pages and campaigns. The core values lie in determinism, speed, and an auditable trail of appearance signals that feed into token libraries and style guides. Core features include hex color palettes with confidence, texture classifications (flat, grainy, gradient), brightness and contrast metrics, gradient detection, and a JSON export for downstream tooling. Outputs support design-system workflows by enabling token generation and swatches creation for quick visual validation. This tool is especially beneficial for UI designers, branding teams, and frontend engineers who manage large image collections and require consistent visual language across products.

How to Use

  1. Upload a background image file (PNG/JPEG).
  2. (Optional) specify a crop region or color space normalization.
  3. Run analysis to generate appearance signals.
  4. Review the palette, textures, brightness, and contrast outputs; use the JSON export to feed tokens.
  5. Export swatches or JSON for design-system integration.
How to use appearance extractor bg3

Frequently Asked Questions

Find Quick Answers

Which image formats are supported?
The tool accepts common formats such as PNG and JPEG; WEBP is supported in many pipelines; if an image cannot be read, an explicit error is returned and a minimal default output is produced.
What outputs are produced?
Primary outputs include a hex color palette, brightness (0–100), contrast_ratio, texture labels, gradient flag, and metadata (width, height, format); a JSON export and optional swatches image are available for integration.
Can palettes be used in design systems?
Yes. The hex values and metadata support token creation. The export formats are designed to integrate with design-token pipelines and asset libraries for consistent visuals across platforms.

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