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CSS Variable Generator

Generate CSS custom properties for color scales, spacing systems, and typography — export as CSS, SCSS, or JSON.

Base Color #7c3aed

Variable Name

Base Unit px

Variable Name

Base Size px

Scale Ratio

About CSS Variable Generator

CSS Variable Generator is a free visual design tool that helps front-end developers and designers generate css custom properties for color scales, spacing systems, and typography — export as css, scss, or json with a live preview. Instead of writing CSS by hand and refreshing your browser repeatedly, use this interactive tool to experiment with values and copy the generated code directly into your project.

How to Use

Adjust the visual controls Use sliders, color pickers, and dropdowns to customize the design properties. The preview updates in real time.

Fine-tune the result Experiment with different values until the design looks exactly the way you want it.

Copy the CSS code Click the Copy button to copy the generated CSS code. It's production-ready and includes vendor prefixes where needed.

Paste into your project Add the copied CSS to your stylesheet. The code works in all modern browsers without modification.

🔒 Privacy note: All processing happens locally in your browser. Your data is never sent to any server.

Why Use CSS Variable Generator?

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Visual Live Preview See your changes in real time as you adjust values. No more guessing what CSS properties will look like — experiment visually and copy the code.

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Production-Ready CSS The generated code is clean, optimized, and ready to paste directly into your stylesheet. Includes vendor prefixes where needed for cross-browser support.

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Faster Than Hand-Coding What takes 10 minutes of CSS trial-and-error takes 10 seconds with CSS Variable Generator. Adjust sliders and dropdowns instead of editing numbers in code.

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Learn CSS Visually Perfect for CSS beginners who want to understand how properties affect visual output. Experiment with values and see the relationship between code and design.

Frequently Asked Questions

CSS custom properties, defined with a -- prefix (e.g., --color-500: #7c3aed), allow you to store reusable values and reference them with var(--color-500). They cascade and inherit like normal CSS properties, can be changed at runtime with JavaScript, and support different values per media query or component scope — making them far more powerful than SCSS variables.

SCSS variables are compiled away at build time — they exist only in source code. CSS custom properties exist in the browser at runtime. This means you can change them with JavaScript, override them in media queries, use them inside calc(), inherit different values per component, and implement themes (dark mode) with just one line of CSS instead of duplicating all your SCSS variable definitions.

Both! Put global design tokens (brand colors, type scale, spacing) in :root so they're globally available. Override them inside component selectors for component-specific values. For example, :root defines --btn-color: #fff, but a .btn-danger rule overrides --btn-color: #fee2e2. This keeps tokens DRY while allowing component-level customization.