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Tech riderRev. 9 Oct 2026

Leonardo

Ch 086.9of 34Color Palette Generators
  1. 1Runs onAPI, Web
  2. 2CostsFree plan
  3. 3Palette methodsboth
  4. 4Image extractionYes
  5. 5Accessibility checksYes
  6. 6Export formatsSVG, Tableau (XML), CSS, JavaScript, design tokens, CSV
  7. 7Print color supportYes
7 lines stated Written from the maker's own pages: leonardocolor.io, github.com
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The Leonardo homepage

Overview

Leonardo is ranked #8 of 34 in color palette generators on Specifiction. It runs on API, Web. There is a free plan.

Leonardo plans and pricing

All plans
Free / open source Free No paid plans or usage limits are stated on the opened pages github.com · 9 Oct 2026

Compared on color palette generators

Palette methods
bothleonardocolor.io
Image extraction
Yesleonardocolor.io
Accessibility checks
Yesleonardocolor.io
Export formats
SVG, Tableau (XML), CSS, JavaScript, design tokens, CSVleonardocolor.io
Print color support
Yesleonardocolor.io

Facts

Purpose
Leonardo creates, manages, and shares accessible color systems for user interface design and data visualization.leonardocolor.io · 9 Oct 2026
Contrast based colors
It generates color swatches from target contrast ratios and also lets users define swatches by target lightness.leonardocolor.io · 9 Oct 2026
Adaptive themes
Adaptive themes let users adjust brightness, contrast, and saturation.leonardocolor.io · 9 Oct 2026
Data visualization
Leonardo offers sequential and diverging color scales for data visualization.leonardocolor.io · 9 Oct 2026
Color accessibility
The tools can cycle through colors for colorblind safe palettes and compare color difference across color vision deficiency types.leonardocolor.io · 9 Oct 2026
Color analysis
The web application includes charts and 3D models for evaluating color themes.leonardocolor.io · 9 Oct 2026
Exports
Themes and color scales can be downloaded as SVG files, and the tool offers Tableau XML and SVG exports for scales.leonardocolor.io · 9 Oct 2026
Developer output
Theme output includes parameters for @adobe/leonardo-contrast-colors, CSS custom properties, and design tokens.leonardocolor.io · 9 Oct 2026
JavaScript package
The @adobe/leonardo-contrast-colors package can generate adaptive contrast-based colors and is installed with npm.leonardocolor.io · 9 Oct 2026
Integrations
The package documentation includes examples for vanilla JavaScript and React, and the homepage says its output can be copied into design tools.leonardocolor.io · 9 Oct 2026
AI tooling
The site documents an MCP server with tools to generate themes, check contrast, convert colors, and create palettes.leonardocolor.io · 9 Oct 2026
License
The project is licensed under Apache V2.github.com · 9 Oct 2026
Limit
Generated contrast ratios may be slightly higher than the requested ratio because available RGB colors and color space interpolation constrain exact values.leonardocolor.io · 9 Oct 2026
Audience
The project describes its web application as a collaborative tool for designers and engineers building color scales for user interfaces.github.com · 9 Oct 2026

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