{"adoption": {"forks": 130, "observed_at": "2026-08-28T04:06:17.602080+00:00", "stars": 2136}, "canonical_url": "https://ross.abutalabs.com/products/leonardo", "card": {"archived": false, "artifact_type": "library", "description": "Generate colors based on a desired contrast ratio", "domain": ["web-design", "frontend", "accessibility"], "enriched": true, "function": ["ui-components", "theme", "accessibility", "data-visualization"], "health_score": 92, "homepage": "http://www.leonardocolor.io", "language": "JavaScript", "license": "Apache-2.0", "license_family": "permissive", "maturity": "active", "member_repos": ["adobe/leonardo"], "name": "adobe/leonardo", "platform": ["browser", "cross-platform"], "pushed_at": "2026-07-08T22:10:56+00:00", "repo": "adobe/leonardo", "stars": 2136, "tags": ["color-science", "color-palette-generator", "wcag-contrast", "adaptive-theming", "dark-mode", "design-tokens", "colorblind-safe", "design-systems", "nodejs", "web-server"], "topics": ["contrast-ratio", "a11y", "contrast", "color", "colors", "colorscheme", "colorscheme-generator", "color-picker", "color-theme", "color-themes", "dark", "color-generator", "color-palette", "color-palette-generator", "color-theme-switcher"], "urls": [], "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"], "what_it_is": "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.", "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"], "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"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/leonardo", "repo": "adobe/leonardo", "role": "main", "score": 86}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:17.602080+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T02:51:51.906525+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "02337c7ba6e07f4c4a91ccc16ac739fbb138ff77c3bf855c3525c2d92841c73e", "fetched_at": "2026-08-28T04:06:17.602080+00:00", "kind": "readme", "missing": false, "url": "https://github.com/adobe/leonardo"}, {"content_hash": "29cbe9260951ac248b5538015347c52bbb334d031f63d9d84e81bc51199e853a", "fetched_at": "2026-08-29T10:32:10.779163+00:00", "kind": "homepage", "missing": false, "url": "http://www.leonardocolor.io"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 91, "longevity": 100, "rhythm": 71}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 2508, "days_push": 56, "days_rel": 194, "gap_med": 1.0, "n_releases_24m": 3}, "score": 86, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}