Cobalt Steel

Cobalt Steel is a blue shadcn/ui theme with rounded corners and sans-serif typography, in light and dark modes.

Blue Vibrant Rounded Inter

Sans: Inter
Serif: Merriweather
Mono: Roboto Mono
Radius: 0.4rem

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Name

Framework

Notes

Visitors

January – June

+12.5%

Buttons

Typography

The theme's three font families.

Sans · Inter

The quick brown fox

Serif · Merriweather

jumps over the lazy dog.

Mono · Roboto Mono

npx shadcn add button

Account

Accept terms and conditions

Notifications

Choose what you want to hear about.

Product updates

New features and releases

Security alerts

Sign-ins from new devices

Marketing

Tips, offers and news

Payment method

CardPayPalApple Pay

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Team

Invite your teammates to collaborate.

SDJLINWK

OwnerEditorViewerSuspended

Storage7.2 of 10 GB

Volume64%

Invoices

Invoice	Status	Amount
INV001	Paid	$250.00
INV002	Pending	$150.00
INV003	Unpaid	$350.00
INV004	Paid	$450.00

FAQ

Yes. It adheres to the WAI-ARIA design pattern.

Colors

Click any swatch to copy its OKLCH value.

Base

Brand

Lines

Charts

Sidebar

StatusOptional, generated to match

Use this theme

Install it with the shadcn CLI, paste the CSS, or export tokens for your design tool.

Paste into app/globals.css, replacing the existing :root and .dark blocks.

Include success, warning & info colors

:root {
  --background: oklch(0.9713 0.0053 286.3);
  --foreground: oklch(0.1921 0.004 286.02);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.1921 0.004 286.02);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.1921 0.004 286.02);
  --primary: oklch(0.5607 0.2181 266.53);
  --primary-foreground: oklch(1 0 0);
  --secondary: oklch(0.927 0.0094 286.21);
  --secondary-foreground: oklch(0.1921 0.004 286.02);
  --muted: oklch(0.9713 0.0053 286.3);
  --muted-foreground: oklch(0.5285 0.0194 271.03);
  --accent: oklch(0.9764 0.0013 286.38);
  --accent-foreground: oklch(0.5607 0.2181 266.53);
  --destructive: oklch(0.5954 0.2219 20.72);
  --destructive-foreground: oklch(1 0 0);
  --border: oklch(0.8947 0.0149 286.09);
  --input: oklch(0.9197 0.004 286.32);
  --ring: oklch(0.5607 0.2181 266.53);
  --chart-1: oklch(0.5538 0.2501 277.67);
  --chart-2: oklch(0.8484 0.1234 166.18);
  --chart-3: oklch(0.8103 0.1158 232.17);
  --chart-4: oklch(0.8575 0.1752 88.49);
  --chart-5: oklch(0.634 0.2029 25.09);
  --sidebar: oklch(1 0 0);
  --sidebar-foreground: oklch(0.402 0.0104 271.15);
  --sidebar-primary: oklch(0.5607 0.2181 266.53);
  --sidebar-primary-foreground: oklch(1 0 0);
  --sidebar-accent: oklch(0.9708 0.0137 272.69);
  --sidebar-accent-foreground: oklch(0.5607 0.2181 266.53);
  --sidebar-border: oklch(0.9454 0.0107 286.19);
  --sidebar-ring: oklch(0.9468 0.0268 288.17);
  --font-sans: Inter, ui-sans-serif, sans-serif, system-ui;
  --font-serif: Merriweather, ui-serif, serif;
  --font-mono: Roboto Mono, ui-monospace, monospace;
  --radius: 0.4rem;
  --spacing: 0.28rem;
  --tracking-normal: 0em;
  --shadow-color: oklch(0 0 0);
  --shadow-opacity: 0.15;
  --shadow-blur: 12px;
  --shadow-spread: 0px;
  --shadow-offset-x: 0.25px;
  --shadow-offset-y: 1px;
  --shadow-2xs: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.07);
  --shadow-xs: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.07);
  --shadow-sm: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 1px 2px -1px hsl(0 0% 0% / 0.15);
  --shadow: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 1px 2px -1px hsl(0 0% 0% / 0.15);
  --shadow-md: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 2px 4px -1px hsl(0 0% 0% / 0.15);
  --shadow-lg: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 4px 6px -1px hsl(0 0% 0% / 0.15);
  --shadow-xl: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 8px 10px -1px hsl(0 0% 0% / 0.15);
  --shadow-2xl: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.38);
}

.dark {
  --background: oklch(0.1921 0.004 286.02);
  --foreground: oklch(1 0 0);
  --card: oklch(0.2099 0.0039 286.06);
  --card-foreground: oklch(1 0 0);
  --popover: oklch(0.2099 0.0039 286.06);
  --popover-foreground: oklch(1 0 0);
  --primary: oklch(0.5607 0.2181 266.53);
  --primary-foreground: oklch(1 0 0);
  --secondary: oklch(0.249 0.0056 285.99);
  --secondary-foreground: oklch(1 0 0);
  --muted: oklch(0.1548 0.0021 286.15);
  --muted-foreground: oklch(0.5606 0.0091 253.9);
  --accent: oklch(0 0 0);
  --accent-foreground: oklch(1 0 0);
  --destructive: oklch(0.69 0.1762 22.07);
  --destructive-foreground: oklch(1 0 0);
  --border: oklch(0.249 0.0056 285.99);
  --input: oklch(0.1735 0.002 286.18);
  --ring: oklch(0.5607 0.2181 266.53);
  --chart-1: oklch(0.5538 0.2501 277.67);
  --chart-2: oklch(0.8484 0.1234 166.18);
  --chart-3: oklch(0.8103 0.1158 232.17);
  --chart-4: oklch(0.8575 0.1752 88.49);
  --chart-5: oklch(0.634 0.2029 25.09);
  --sidebar: oklch(0.2099 0.0039 286.06);
  --sidebar-foreground: oklch(0.7771 0.0115 274.85);
  --sidebar-primary: oklch(0.5607 0.2181 266.53);
  --sidebar-primary-foreground: oklch(1 0 0);
  --sidebar-accent: oklch(0.1921 0.004 286.02);
  --sidebar-accent-foreground: oklch(0.5607 0.2181 266.53);
  --sidebar-border: oklch(0.2099 0.0039 286.06);
  --sidebar-ring: oklch(0.5607 0.2181 266.53);
  --font-sans: Inter, ui-sans-serif, sans-serif, system-ui;
  --font-serif: Merriweather, ui-serif, serif;
  --font-mono: Roboto Mono, ui-monospace, monospace;
  --radius: 0.4rem;
  --spacing: 0.28rem;
  --tracking-normal: 0em;
  --shadow-color: oklch(0 0 0);
  --shadow-opacity: 0.15;
  --shadow-blur: 12px;
  --shadow-spread: 0px;
  --shadow-offset-x: 0.25px;
  --shadow-offset-y: 1px;
  --shadow-2xs: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.07);
  --shadow-xs: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.07);
  --shadow-sm: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 1px 2px -1px hsl(0 0% 0% / 0.15);
  --shadow: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 1px 2px -1px hsl(0 0% 0% / 0.15);
  --shadow-md: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 2px 4px -1px hsl(0 0% 0% / 0.15);
  --shadow-lg: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 4px 6px -1px hsl(0 0% 0% / 0.15);
  --shadow-xl: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.15), 0.25px 8px 10px -1px hsl(0 0% 0% / 0.15);
  --shadow-2xl: 0.25px 1px 12px 0px hsl(0 0% 0% / 0.38);
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --color-card: var(--card);
  --color-card-foreground: var(--card-foreground);
  --color-popover: var(--popover);
  --color-popover-foreground: var(--popover-foreground);
  --color-primary: var(--primary);
  --color-primary-foreground: var(--primary-foreground);
  --color-secondary: var(--secondary);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-muted: var(--muted);
  --color-muted-foreground: var(--muted-foreground);
  --color-accent: var(--accent);
  --color-accent-foreground: var(--accent-foreground);
  --color-destructive: var(--destructive);
  --color-destructive-foreground: var(--destructive-foreground);
  --color-border: var(--border);
  --color-input: var(--input);
  --color-ring: var(--ring);
  --color-chart-1: var(--chart-1);
  --color-chart-2: var(--chart-2);
  --color-chart-3: var(--chart-3);
  --color-chart-4: var(--chart-4);
  --color-chart-5: var(--chart-5);
  --color-sidebar: var(--sidebar);
  --color-sidebar-foreground: var(--sidebar-foreground);
  --color-sidebar-primary: var(--sidebar-primary);
  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
  --color-sidebar-accent: var(--sidebar-accent);
  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
  --color-sidebar-border: var(--sidebar-border);
  --color-sidebar-ring: var(--sidebar-ring);

  --font-sans: var(--font-sans);
  --font-mono: var(--font-mono);
  --font-serif: var(--font-serif);

  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);

  --shadow-2xs: var(--shadow-2xs);
  --shadow-xs: var(--shadow-xs);
  --shadow-sm: var(--shadow-sm);
  --shadow: var(--shadow);
  --shadow-md: var(--shadow-md);
  --shadow-lg: var(--shadow-lg);
  --shadow-xl: var(--shadow-xl);
  --shadow-2xl: var(--shadow-2xl);

  --tracking-tighter: calc(var(--tracking-normal) - 0.05em);
  --tracking-tight: calc(var(--tracking-normal) - 0.025em);
  --tracking-normal: var(--tracking-normal);
  --tracking-wide: calc(var(--tracking-normal) + 0.025em);
  --tracking-wider: calc(var(--tracking-normal) + 0.05em);
  --tracking-widest: calc(var(--tracking-normal) + 0.1em);
}

@layer base {
  body {
    letter-spacing: var(--tracking-normal);
  }
}