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Cuelark UI
Theme · Instrument Sans

Claude theme for shadcn/ui

A theme in the style of Claude: warm paper backgrounds, clay-orange primary buttons, soft beige borders and generous corners, with a warm charcoal dark mode.

Font: Instrument Sans. Claude's interface uses a commercial face; Instrument Sans is the closest open alternative.

Preview

Light
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LiveHealthyv1.0
Dark
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LiveHealthyv1.0

Install

With the shadcn CLI. It writes the light and dark tokens into your global CSS (and the Cuelark utilities if you don't have them yet).

pnpm dlx shadcn@latest add https://ui.cuelark.com/r/theme-claude.json

Or paste the CSS after your Tailwind import. The variable names are the standard shadcn/ui ones, so it themes any shadcn project.

globals.css
:root {
  --background: #faf9f5;
  --foreground: #141413;
  --card: #fdfcf8;
  --card-foreground: #141413;
  --popover: #ffffff;
  --popover-foreground: #141413;
  --primary: #c96442;
  --primary-foreground: #ffffff;
  --secondary: #f0eee6;
  --secondary-foreground: #141413;
  --muted: #f0eee6;
  --muted-foreground: #73726c;
  --accent: #e8e6dc;
  --accent-foreground: #141413;
  --border: #e5e2d9;
  --input: #dad7cc;
  --ring: #d97757;
  --signal: #c96442;
  --signal-foreground: #ffffff;
  --cl-mark: #cfcbbf;
  --cl-shade: rgb(70 50 20 / 0.08);
  --cl-font-sans: "Instrument Sans Variable", ui-sans-serif, system-ui, sans-serif;
  --cl-text-size: 1;
  --cl-tracking: 0em;
  --radius: 0.75rem;
  --cl-density: 1;
  --cl-marks: 0;
  --cl-motion: 1;
}

.dark {
  --background: #262624;
  --foreground: #faf9f5;
  --card: #30302e;
  --card-foreground: #faf9f5;
  --popover: #363633;
  --popover-foreground: #faf9f5;
  --primary: #d97757;
  --primary-foreground: #ffffff;
  --secondary: #3a3a37;
  --secondary-foreground: #faf9f5;
  --muted: #30302e;
  --muted-foreground: #b7b5a9;
  --accent: #3d3d3a;
  --accent-foreground: #faf9f5;
  --border: #3e3e3a;
  --input: #4a4a45;
  --ring: #d97757;
  --signal: #d97757;
  --signal-foreground: #ffffff;
  --cl-mark: #55554f;
  --cl-shade: rgb(0 0 0 / 0.45);
}

Tokens

TokenUsed forLightDark
--backgroundPage
--foregroundText
--cardCards
--mutedPanels, wells
--muted-foregroundSecondary text
--primaryPrimary buttons
--primary-foregroundText on primary
--secondarySecondary buttons
--accentHover, selection
--borderBorders
--inputInput borders
--ringFocus ring
--signalAccent: checked, live, highlights