adobe/leonardo
Generate colors based on a desired contrast ratio observed · 2026-08-28
Health v2 · maintenance only
86/100
- Activity 91
- Release rhythm 71
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 1.0
- age_days: 2508
- days_rel: 194
- days_push: 56
- n_releases_24m: 3
Adoption not part of the score
2136 stars · 130 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Leonardo is an open-source tool from Adobe for generating accessible, adaptive color palettes based on desired contrast ratios. It includes an npm library (@adobe/leonardo-contrast-colors) and a web application for building color scales for UI design systems and data visualization.
Use cases
- generate color palettes that meet WCAG contrast requirements
- create accessible dark mode color themes
- build perceptually uniform color scales for data visualization
- generate colorblind-safe palettes
- create adaptive color themes with adjustable contrast and brightness
- export design tokens and CSS custom properties for color systems
When to choose
- you need colors that conform to WCAG contrast standards by design rather than post-hoc auditing
- you're building a design system with light and dark adaptive themes
- you need sequential or diverging color scales for data visualization
- you want to let end users personalize contrast, brightness, or saturation
When to avoid
- you just need a quick color picker without accessibility constraints
- your project doesn't involve UI color theming or data visualization
- you need a non-JavaScript environment without npm support
Facets
library · maturity active
ui-components theme accessibility data-visualization web-design frontend accessibility browser cross-platform color-science color-palette-generator wcag-contrast adaptive-theming dark-mode design-tokens colorblind-safe design-systems nodejs web-server
2 sources
- readme: https://github.com/adobe/leonardo · fetched 2026-08-28 · 02337c7ba6e0
- homepage: http://www.leonardocolor.io · fetched 2026-08-29 · 29cbe9260951
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| adobe/leonardo | main | 86 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem