{"adoption": {"forks": 659, "observed_at": "2026-08-28T04:09:17.344535+00:00", "stars": 5397}, "canonical_url": "https://ross.abutalabs.com/products/theme-ui", "card": {"archived": false, "artifact_type": "library", "description": "Build consistent, themeable React apps based on constraint-based design principles", "domain": ["web-development", "frontend", "web-design", "developer-tools"], "enriched": true, "function": ["ui-components", "css-framework", "theme", "frontend-framework"], "health_score": 89, "homepage": "https://theme-ui.com", "language": "TypeScript", "license": "MIT", "license_family": "permissive", "maturity": "active", "member_repos": ["system-ui/theme-ui"], "name": "system-ui/theme-ui", "platform": ["cross-platform"], "pushed_at": "2026-06-14T11:55:43+00:00", "repo": "system-ui/theme-ui", "stars": 5397, "tags": ["design-system", "design-tokens", "react", "emotion", "mdx", "sx-prop", "color-modes", "theming", "nodejs", "web-server"], "topics": ["style", "theme", "design-system", "design", "design-tokens", "ui", "color", "typography", "layout", "react", "emotion", "mdx"], "urls": [], "use_cases": ["build a design system in react", "theme react components with design tokens", "add consistent styling with an sx prop", "implement dark mode / color modes in react", "style gatsby sites with mdx", "create a custom component library with consistent typography and colors"], "what_it_is": "Theme UI is a React library for building themeable user interfaces based on constraint-based design principles. It provides an sx prop and theme object so styles reference design tokens for color, typography, and layout consistently across apps and design systems.", "when_to_avoid": ["you use a framework other than React", "you want utility-class CSS like Tailwind instead of CSS-in-JS", "you need zero runtime styles or server-only CSS extraction", "your team prefers plain CSS or CSS Modules"], "when_to_choose": ["you want constraint-based, token-driven styling in React", "you need built-in theming and color mode switching", "you use Gatsby or MDX and want integrated styling", "you prefer CSS-in-JS with Emotion"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/theme-ui", "repo": "system-ui/theme-ui", "role": "main", "score": 77}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:09:17.344535+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:58:22.378806+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "4210dd437e2b81b436739d8fecde8186a144162fac715c0f7512ab1feb08aa17", "fetched_at": "2026-08-28T04:09:17.344535+00:00", "kind": "readme", "missing": false, "url": "https://github.com/system-ui/theme-ui"}, {"content_hash": "43a4011ad0359304ac3b30c10b5332cf38fb32e8267d9996ed7bb68ad0145692", "fetched_at": "2026-08-29T08:52:53.654937+00:00", "kind": "homepage", "missing": false, "url": "https://theme-ui.com"}, {"content_hash": "7358d7db66e0f8b25b5be868a4230456949ba57ed8087ddcf05989471806ff6b", "fetched_at": "2026-08-29T08:52:53.664342+00:00", "kind": "site_page", "missing": false, "url": "https://theme-ui.com/getting-started"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 87, "longevity": 100, "rhythm": 52}, "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": 2709, "days_push": 80, "days_rel": 243, "gap_med": 59.0, "n_releases_24m": 5}, "score": 77, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}