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@atifc/css

v1.0.1

Published

Parametric CSS design token system built on OKLCH with dark/light theming and zero dependencies.

Vulnerabilities

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Links

Git

Maintainers

atifcatifc

Keywords

cssdesign-tokenscss-variablesoklchdark-modetheming

Readme

@atifc/css

GitHub Repo npm Package

A parametric CSS design token system built on OKLCH. Drop it into any project to get a complete, mathematically consistent set of color, typography, spacing, and layout tokens with automatic dark/light theming.

Features

  • OKLCH-based color system — entire palette derived from two parameters (hue and chroma)
  • Dark/light theme with automatic detection via prefers-color-scheme
  • Manual theme override via data-theme="dark" or data-theme="light" on <html>
  • 10-step surface scale, 4-level text hierarchy, accent + semantic state colors
  • Typography scale, font stacks, weights, line heights, and letter spacing
  • Spacing scale, border widths, and border radius tokens
  • Shadow and elevation tokens
  • Transition durations and easing functions
  • Named z-index layers
  • Fixed and fluid (clamp-based) container widths
  • Zero dependencies, pure CSS custom properties

Browser Compatibility

Requires oklch() support:

| Browser | Minimum version | | ------- | ---------------- | | Chrome | 111+ (Mar 2023) | | Safari | 16.4+ (Mar 2023) | | Firefox | 113+ (May 2023) |

Installation

npm install @atifc/css

Usage

HTML

<link rel="stylesheet" href="node_modules/@atifc/css/dist/root.css" />

JS / TS (Vite, Webpack)

import '@atifc/css';

CSS (PostCSS, Sass)

@import '@atifc/css';

Customisation

Override any of the theme parameters on :root after importing to reshape the entire token system:

:root {
	/* Accent color */
	--theme-accent-hue: 140; /* 0–360 — see hue table below */
	--theme-accent-chroma: 0.25; /* 0+ — 0 = gray, 0.2+ = vibrant */

	/* Dark theme base values */
	--dark-surface-base: 0.15;
	--dark-text-base-lightness: 0.9;
	--dark-accent-base-lightness: 0.65;

	/* Light theme base values */
	--light-surface-base: 0.97;
	--light-text-base-lightness: 0.18;
	--light-accent-base-lightness: 0.45;
}

Hue reference:

| Color | Hue | Notes | | ------ | --- | ----------------- | | Pink | 0 | | | Red | 10 | Needs chroma 0.2+ | | Orange | 40 | Needs chroma 0.2+ | | Yellow | 100 | Needs chroma 0.2+ | | Green | 140 | Needs chroma 0.2+ | | Blue | 220 | |

Chroma reference:

| Range | Effect | | ------- | ----------------------------- | | 0 | Gray (no color) | | 0.1 | Muted / pastel | | 0.2+ | Vibrant (recommended) | | 0.5–1.0 | Neon / bright (use sparingly) |

Tokens

All tokens are CSS custom properties available globally after import.

| Category | Variables | | --------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- | | Surfaces | --surface-1 through --surface-10 | | Text | --text-primary, --text-secondary, --text-tertiary, --text-disabled | | Accent | --accent, --accent-hover, --accent-muted, --accent-alpha, --accent-alpha-hover | | Semantic states | --success, --warning, --error, --info (each with a --*-bg variant) | | Borders | --border-subtle, --border-default, --border-strong, --divider | | Overlays | --overlay, --overlay-light, --overlay-strong, --surface-alpha, --surface-alpha-light, --surface-alpha-strong | | Typography | --font-sans, --font-serif, --font-mono, --text-xs through --text-3xl, --font-light through --font-bold, --leading-*, --tracking-* | | Spacing | --space-px, --space-xs through --space-4xl | | Border radius | --radius-none through --radius-full | | Shadows | --shadow-none, --shadow-xs through --shadow-2xl, --shadow-inner | | Transitions | --duration-instant through --duration-slower, --ease-*, --transition, --transition-colors | | Z-index | --z-base through --z-toast | | Containers | --container-sm through --container-2xl, --container-fluid-sm through --container-fluid-2xl |

License

MIT