{
  "id": "gov-uk-citizen-light",
  "tagline": "Public Service Edition",
  "mode": "light",
  "physics": "flat",
  "palette": {
    "color-premium": "#bf8700",
    "color-system": "#681ed2",
    "color-success": "#006220",
    "color-error": "#a60000",
    "color-premium-light": "oklch(from var(--color-premium) calc(l * 1.25) c h)",
    "color-premium-dark": "oklch(from var(--color-premium) calc(l * 0.75) c h)",
    "color-premium-subtle": "oklch(from var(--color-premium) l c h / 0.15)",
    "color-system-light": "oklch(from var(--color-system) calc(l * 1.25) c h)",
    "color-system-dark": "oklch(from var(--color-system) calc(l * 0.75) c h)",
    "color-system-subtle": "oklch(from var(--color-system) l c h / 0.15)",
    "color-success-light": "oklch(from var(--color-success) calc(l * 1.25) c h)",
    "color-success-dark": "oklch(from var(--color-success) calc(l * 0.75) c h)",
    "color-success-subtle": "oklch(from var(--color-success) l c h / 0.15)",
    "color-error-light": "oklch(from var(--color-error) calc(l * 1.25) c h)",
    "color-error-dark": "oklch(from var(--color-error) calc(l * 0.75) c h)",
    "color-error-subtle": "oklch(from var(--color-error) l c h / 0.15)",
    "font-atmos-heading": "'Inter', sans-serif",
    "font-atmos-body": "'Inter', sans-serif",
    "bg-canvas": "#ffffff",
    "bg-spotlight": "#ffffff",
    "bg-surface": "#ffffff",
    "bg-sunk": "#f3f2f1",
    "energy-primary": "#1d70b8",
    "energy-secondary": "#00703c",
    "border-color": "rgba(11, 12, 12, 0.22)",
    "text-main": "#0b0c0c",
    "text-dim": "#505a5f",
    "text-mute": "#6f777b"
  },
  "disclaimer": "Atmospheric study inspired by GOV.UK's publicly visible design language. Void Energy is not affiliated with, endorsed by, sponsored by, or licensed by GOV.UK. The downloadable atmosphere file contains color, motion, and typographic-rhythm tokens only — no brand logos, marks, or proprietary assets. All trademarks are the property of their respective owners.",
  "description": "GOV.UK's citizen-service reading — pure-white canvas, gov.uk link blue #1d70b8 as primary, GDS \"Start now\" green #00703c as success- secondary, deep near-black #0b0c0c ink at WCAG-AAA contrast. The public-service register: constraint-driven layout, accessibility- first chrome, near-zero radii (the famous focus-ring is a literal yellow box, not a curve). Lexend stands in for GDS Transport at the rendering level — both typefaces optimize for reading proficiency above editorial flourish. Distinguished from peer institutional brands (bmw-institutional-light / stripe-modern- light / visa-cardface-light) by typographic register (accessibility-optimized Lexend vs corporate grotesque) and by chrome (zero-radii civic vs modern-rounded SaaS).",
  "sources": [
    "https://design-system.service.gov.uk",
    "https://design-system.service.gov.uk/styles/colour/",
    "https://www.gov.uk"
  ],
  "antiPatterns": [
    "Don't substitute the canvas with anything off-white — gov.uk's documented chrome uses pure #ffffff per WCAG-AAA contrast guidance; warm-near-white belongs to NYT/Aesop editorial territory.",
    "Don't promote the iconic focus-yellow #ffdd00 to energy-secondary — pure yellow fails 3:1 against white and would shatter chart-series contrast across the chrome. Yellow lives only on focus-ring backdrop in the canonical gov.uk system.",
    "Don't drop Lexend for Inter — Lexend's reading-proficiency design is the closest free analog to GDS Transport's accessibility-first ethos; Inter reads as generic SaaS chrome and loses the civic-service identity."
  ],
  "brand": {
    "id": "gov-uk",
    "name": "GOV.UK",
    "radii": {
      "sm": "0",
      "md": "0",
      "lg": "2px",
      "xl": "2px"
    },
    "typography": {
      "trackingBody": "0",
      "trackingHeading": "0",
      "weightHeading": 700,
      "weightDisplay": 700
    },
    "fonts": {
      "heading": {
        "family": "Lexend",
        "src": "https://cdn.jsdelivr.net/fontsource/fonts/lexend:vf@latest/latin-wght-normal.woff2",
        "weight": "100 900",
        "display": "swap"
      },
      "body": {
        "family": "Lexend",
        "src": "https://cdn.jsdelivr.net/fontsource/fonts/lexend:vf@latest/latin-wght-normal.woff2",
        "weight": "100 900",
        "display": "swap"
      }
    }
  }
}