CSS Variables Generator

Generate and manage CSS custom properties. Create design tokens and variables for easier theming and maintenance.

CSS Variables Generator

Variable 1
Variable 2
Variable 3

CSS Code

:root {
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --font-size-base: 16px;
}

JSON Export

[
  {
    "name": "--primary-color",
    "value": "#6366f1",
    "description": "Primary brand color"
  },
  {
    "name": "--secondary-color",
    "value": "#8b5cf6",
    "description": "Secondary brand color"
  },
  {
    "name": "--font-size-base",
    "value": "16px",
    "description": "Base font size"
  }
]

About CSS Variables

CSS custom properties (variables) allow you to store values for reuse throughout your stylesheet:

  • Define variables in :root for global access
  • Use var() function to reference variables
  • Enable dynamic theming and easier maintenance
  • Support for fallback values

💡 Tip: Use CSS variables for colors, spacing, fonts, and other design tokens. They make theming and maintenance much easier.

What It Does

A CSS Variables Generator helps you create and manage CSS custom properties (variables) for easier theming, maintenance, and consistency. CSS variables allow you to define values once and reuse them throughout your stylesheet, making it easy to create themes, adjust colors globally, and maintain design systems. The generator provides an intuitive interface for adding, editing, and organizing CSS variables with names, values, and optional descriptions. It generates clean CSS code for :root or any selector, and can export variables as JSON for use in JavaScript or other tools. Perfect for design systems, theme management, and maintaining consistent spacing, colors, and typography across large projects.

Key Features:

  • Create and manage CSS custom properties
  • Add variables with names, values, and descriptions
  • Customizable root selector (:root, .theme, etc.)
  • Export as CSS code or JSON format
  • Organize design tokens and theme variables
  • One-click copy for easy integration
  • Support for any CSS value type
  • Clean, formatted output

How To Use

Creating CSS variables is simple. Add variables with their names and values, then copy the generated code.

1

Set Root Selector

Choose the root selector for your variables (default: :root). You can use :root for global variables or specific selectors like .dark-theme for scoped variables.

2

Add Variables

Click "Add Variable" to create a new CSS variable. Enter the variable name (must start with --), value, and optional description.

3

Edit Variables

Modify variable names, values, or descriptions as needed. Changes update the generated CSS in real-time.

4

Copy or Export

Copy the CSS code to use in your stylesheet, or export as JSON for use in JavaScript or other tools.

Pro Tips

  • •Use descriptive variable names (--primary-color, --spacing-md)
  • •Group related variables with naming conventions
  • •Use :root for global variables, specific selectors for themes
  • •Variables can hold any CSS value (colors, sizes, strings)
  • •Use var() function to reference variables: color: var(--primary-color)

Benefits

Simplifies theme management and switching
Enables global value changes from one location
Improves code maintainability and consistency
Supports design system implementation
Makes responsive design adjustments easier

Use Cases

Design Systems

Create design tokens and variables for consistent spacing, colors, and typography across projects.

Theme Management

Define theme variables for light/dark modes or multiple color schemes.

Global Styling

Use variables for global values like primary colors, font sizes, and spacing that need to be consistent.

Responsive Design

Use variables for breakpoints and responsive values that can be adjusted globally.

Component Libraries

Define component variables for reusable UI components with customizable properties.

Frequently Asked Questions

1 What's the difference between CSS variables and Sass variables?
CSS variables are runtime variables that can be changed with JavaScript and cascade through the DOM. Sass variables are compile-time and become static values in the final CSS. CSS variables are more flexible for theming and dynamic changes.
2 Can I use CSS variables in calc()?
Yes! CSS variables work perfectly with calc(): width: calc(var(--spacing) * 2);. This is useful for creating responsive spacing and sizing based on variables.
3 How do I create fallback values?
Use the var() function with a second parameter for fallback: color: var(--primary-color, #000);. If the variable isn't defined, the fallback value is used.

Related Tools

Palette / Gradient Generator

Generate color palettes and CSS gradients. Create harmonious color schemes for web design and branding.

CSS Snippet Generator

Generate CSS code for shadows, gradients, borders, and effects. Visual CSS code generator for faster development.

Simple Favicon Generator

Create simple favicons for your website. Generate ICO files from text or colors quickly.

Text Gradient Generator

Generate beautiful text gradients using CSS background-clip. Create eye-catching gradient text effects for headings and logos.

Clip Path Generator

Generate CSS clip-path shapes. Create circles, ellipses, polygons, and inset shapes for creative layouts and image masks.

CSS Animation Generator

Generate CSS keyframe animations with visual controls. Create smooth animations with transform, opacity, and timing controls.