{
  "$description": "Brand: Anthropic (anthropic@1.0.0)",
  "color": {
    "swatches": {
      "$description": "Source-of-truth color swatches from palette anthropic@1.0.0",
      "ivory-light": {
        "$value": "#FAF9F5",
        "$type": "color",
        "$description": "Page canvas — the warm cream Anthropic uses as the base."
      },
      "ivory-medium": {
        "$value": "#F0EEE6",
        "$type": "color",
        "$description": "Subtle elevated surface; hover state for ivory buttons."
      },
      "ivory-dark": {
        "$value": "#E8E6DC",
        "$type": "color",
        "$description": "Border / quiet divider on ivory canvas."
      },
      "slate-dark": {
        "$value": "#141413",
        "$type": "color",
        "$description": "Primary text on ivory; canvas in dark mode."
      },
      "slate-medium": {
        "$value": "#3D3D3A",
        "$type": "color",
        "$description": "Elevated surface in dark mode; secondary text on ivory."
      },
      "slate-light": {
        "$value": "#5E5D59",
        "$type": "color",
        "$description": "Tertiary text; hover state for slate surfaces."
      },
      "cloud-light": {
        "$value": "#D1CFC5",
        "$type": "color",
        "$description": "Soft neutral, illustration mid-tone."
      },
      "cloud-medium": {
        "$value": "#B0AEA5",
        "$type": "color",
        "$description": "Mid cloud — secondary text on dark surfaces."
      },
      "cloud-dark": {
        "$value": "#87867F",
        "$type": "color",
        "$description": "Deep cloud — quiet text on warm surfaces."
      },
      "clay": {
        "$value": "#D97757",
        "$type": "color",
        "$description": "Claude's signature terracotta accent. The brand's primary warm."
      },
      "accent": {
        "$value": "#C6613F",
        "$type": "color",
        "$description": "Pressed / active variant of clay."
      },
      "oat": {
        "$value": "#E3DACC",
        "$type": "color",
        "$description": "Wheaten neutral, illustration warm."
      },
      "manilla": {
        "$value": "#EBDBBC",
        "$type": "color",
        "$description": "Pale parchment yellow."
      },
      "kraft": {
        "$value": "#D4A27F",
        "$type": "color",
        "$description": "Tan / craft-paper warm."
      },
      "olive": {
        "$value": "#788C5D",
        "$type": "color",
        "$description": "Muted green secondary."
      },
      "cactus": {
        "$value": "#BCD1CA",
        "$type": "color",
        "$description": "Pale sage."
      },
      "sky": {
        "$value": "#6A9BCC",
        "$type": "color",
        "$description": "Mid blue secondary."
      },
      "heather": {
        "$value": "#CBCADB",
        "$type": "color",
        "$description": "Pale lavender."
      },
      "fig": {
        "$value": "#C46686",
        "$type": "color",
        "$description": "Muted rose-magenta."
      },
      "coral": {
        "$value": "#EBCECE",
        "$type": "color",
        "$description": "Pale coral pink — pairs with clay."
      }
    }
  },
  "font": {
    "$description": "Typography roles mapped to font atoms",
    "heading": {
      "family": {
        "$value": [
          "Inter",
          "-apple-system",
          "BlinkMacSystemFont",
          "Segoe UI",
          "Roboto",
          "Helvetica Neue",
          "Arial",
          "sans-serif"
        ],
        "$type": "fontFamily",
        "$description": "heading role → Inter (inter@1.0.0)"
      },
      "weight": {
        "100": {
          "$value": 100,
          "$type": "fontWeight"
        },
        "200": {
          "$value": 200,
          "$type": "fontWeight"
        },
        "300": {
          "$value": 300,
          "$type": "fontWeight"
        },
        "400": {
          "$value": 400,
          "$type": "fontWeight"
        },
        "500": {
          "$value": 500,
          "$type": "fontWeight"
        },
        "600": {
          "$value": 600,
          "$type": "fontWeight"
        },
        "700": {
          "$value": 700,
          "$type": "fontWeight"
        },
        "800": {
          "$value": 800,
          "$type": "fontWeight"
        },
        "900": {
          "$value": 900,
          "$type": "fontWeight"
        },
        "$description": "Available font weights"
      }
    },
    "body": {
      "family": {
        "$value": [
          "Inter",
          "-apple-system",
          "BlinkMacSystemFont",
          "Segoe UI",
          "Roboto",
          "Helvetica Neue",
          "Arial",
          "sans-serif"
        ],
        "$type": "fontFamily",
        "$description": "body role → Inter (inter@1.0.0)"
      },
      "weight": {
        "100": {
          "$value": 100,
          "$type": "fontWeight"
        },
        "200": {
          "$value": 200,
          "$type": "fontWeight"
        },
        "300": {
          "$value": 300,
          "$type": "fontWeight"
        },
        "400": {
          "$value": 400,
          "$type": "fontWeight"
        },
        "500": {
          "$value": 500,
          "$type": "fontWeight"
        },
        "600": {
          "$value": 600,
          "$type": "fontWeight"
        },
        "700": {
          "$value": 700,
          "$type": "fontWeight"
        },
        "800": {
          "$value": 800,
          "$type": "fontWeight"
        },
        "900": {
          "$value": 900,
          "$type": "fontWeight"
        },
        "$description": "Available font weights"
      }
    },
    "mono": {
      "family": {
        "$value": [
          "JetBrainsMono Nerd Font",
          "JetBrains Mono",
          "Fira Code",
          "Menlo",
          "Monaco",
          "Consolas",
          "Liberation Mono",
          "monospace"
        ],
        "$type": "fontFamily",
        "$description": "mono role → JetBrainsMono Nerd Font (jetbrainsmono-nerdfont@1.0.0)"
      },
      "weight": {
        "100": {
          "$value": 100,
          "$type": "fontWeight"
        },
        "200": {
          "$value": 200,
          "$type": "fontWeight"
        },
        "300": {
          "$value": 300,
          "$type": "fontWeight"
        },
        "400": {
          "$value": 400,
          "$type": "fontWeight"
        },
        "500": {
          "$value": 500,
          "$type": "fontWeight"
        },
        "600": {
          "$value": 600,
          "$type": "fontWeight"
        },
        "700": {
          "$value": 700,
          "$type": "fontWeight"
        },
        "800": {
          "$value": 800,
          "$type": "fontWeight"
        },
        "$description": "Available font weights"
      }
    }
  },
  "$extensions": {
    "com.brand-atoms.rules": [
      {
        "type": "contrastRatio",
        "target": "text-primary",
        "severity": "error",
        "rationale": "Slate Dark (#141413) on Ivory Light (#FAF9F5) gives ~17:1 — clears AAA decisively. The brand's deliberate, long-form reading posture justifies an AAA contrast target rather than the AA floor.\n",
        "against": "background",
        "minRatio": 7,
        "standard": "WCAG-AAA"
      },
      {
        "type": "colorChoice",
        "target": "roles.colors.primary",
        "severity": "error",
        "rationale": "Clay (#D97757) is Claude's signature warm. The other secondary swatches appear in illustration and surface accents only — fig as muted-rose, coral as pale pink, kraft as tan — and must not stand in for the primary brand action color.\n",
        "allowed": [
          "clay",
          "accent"
        ],
        "forbidden": [
          "fig",
          "coral",
          "kraft",
          "sky",
          "olive"
        ]
      },
      {
        "type": "colorChoice",
        "target": "roles.colors.mark",
        "severity": "error",
        "rationale": "The Claude / Anthropic mark fill is clay specifically. The pressed `accent` variant is reserved for hover/active states on interactive surfaces, not for the mark itself.\n",
        "allowed": [
          "clay"
        ],
        "forbidden": [
          "accent",
          "fig",
          "coral",
          "kraft",
          "olive",
          "sky"
        ]
      },
      {
        "type": "forbiddenTreatment",
        "target": "logo",
        "severity": "error",
        "rationale": "Anthropic's identity is restrained by design. Recolored, skewed, or gradient-filled marks conflict with the brand's humane, considered voice.\n",
        "treatments": [
          "stretched",
          "rotated",
          "recolored",
          "drop-shadow",
          "gradient-fill",
          "on-busy-photo"
        ]
      },
      {
        "type": "enumMembership",
        "target": "typography.heading.fontWeight",
        "severity": "warning",
        "rationale": "Anthropic's marketing site uses Regular (400), Medium (500), SemiBold (600), and Bold (700) — declared on the live stylesheet as --_typography---font--display-sans-regular through --display-sans-bold. Heavier display weights are not in the licensed variable-font cut.\n",
        "allowed": [
          "400",
          "500",
          "600",
          "700"
        ]
      },
      {
        "type": "fontPairing",
        "target": "typography.display",
        "severity": "error",
        "rationale": "The Anthropic Sans display face pairs with Anthropic Serif for long-form prose on anthropic.com. A 1.5× minimum display-to-prose size ratio preserves the typographic hierarchy when the serif is rendered alongside the sans headlines.\n",
        "requires": "prose",
        "minSizeRatio": 1.5
      },
      {
        "type": "accessibilityRequirement",
        "target": "*",
        "severity": "warning",
        "rationale": "WCAG 2.1 Success Criterion 1.4.6 (Contrast Enhanced) — Level AAA. The brand's long-form, considered posture and research-document aesthetic justify the enhanced 7:1 target rather than the AA 4.5:1 floor.\n",
        "standard": "WCAG-AAA",
        "criterion": "1.4.6"
      },
      {
        "type": "contextRestriction",
        "target": "roles.colors.success",
        "severity": "error",
        "rationale": "Olive (#788C5D) is the muted-green secondary used for confirmation and positive data points. It is NOT the error color (use fig). Reusing it for failure states conflicts with the established positive-natural meaning.\n",
        "allowedContexts": [
          "confirmation",
          "completion",
          "data-viz-positive"
        ],
        "forbiddenContexts": [
          "error-state",
          "destructive-action"
        ]
      },
      {
        "type": "compositionConstraint",
        "target": "roles.colors.primary",
        "severity": "recommendation",
        "rationale": "Clay reads cleanest against the ivory canvas or the slate dark canvas. Pairing it adjacent to fig (rose-magenta), sky (blue), or heather (lavender) introduces a chromatic conflict that fights for attention without resolving into hierarchy.\n",
        "pairsWith": [
          "ivory-light",
          "ivory-medium",
          "slate-dark"
        ],
        "doesNotPairWith": [
          "fig",
          "sky",
          "heather"
        ]
      }
    ],
    "com.brand-atoms.assets": [],
    "com.brand-atoms.provenance": {
      "source": "https://www.anthropic.com/",
      "license": "Proprietary — All Rights Reserved",
      "attribution": "Anthropic, PBC — visual identity captured from the deployed stylesheet on anthropic.com (--swatch-*, --_typography-*, --_color-theme-* token families). Anthropic, Claude, and associated marks are property of Anthropic.\n",
      "importedDate": "2026-05-17",
      "notes": "The proprietary brand typefaces (Anthropic Sans, Anthropic Serif, Anthropic Mono) are declared on anthropic.com via @font-face but are not publicly distributed. This atom references Inter@1 as the open-source rendering substitute for the sans roles and notes the proprietary primaries here.\n"
    },
    "com.brand-atoms.references": {
      "palette": "anthropic@1.0.0",
      "fonts": {
        "heading": "inter@1.0.0",
        "body": "inter@1.0.0",
        "mono": "jetbrainsmono-nerdfont@1.0.0"
      }
    }
  }
}