CSS Variables Generator
Generate and manage CSS custom properties (variables) for consistent styling.
About CSS Variables Generator
ToolsOfIndia built the CSS Variables Generator for front-end developers and design system builders who want straight answers in plain language. Everything is copy-paste CSS with no framework lock-in, so the code drops into any project from a WordPress site to a Dukaan storefront. Define CSS custom properties - variables - for colours, spacing, fonts and radii, and copy the :root block ready to paste, with a light and dark theme pair. Variables are the foundation of a maintainable design system, and the tool generates a consistent set so a brand change is one edit. Developers use it to bootstrap a theme, designers to define a token set, and the output is plain CSS with no framework. Because it runs locally, nothing is uploaded, and the variables include fallback values. It is the variables tool that hand-naming a token set always leaves inconsistent. In practice people reach for it most when bootstrapping a design system theme, when defining a colour token set, or while creating a light and dark theme pair. It works just as well on a budget Android phone as on an office desktop, over any connection.
How to Use the CSS Variables Generator
- Open the CSS Variables Generator tool above — it loads instantly in your browser.
- Enter your values in the input fields provided.
- The result updates immediately — no calculate button needed (or click Calculate where shown).
- Copy or use your result directly. Nothing is stored or sent to any server.
Key Features of CSS Variables Generator
- Add/edit/remove variables
- Color, spacing, typography support
- Export as CSS code
- Colour, spacing, font, radius tokens
- Light and dark theme pair
- Fallback values included
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Frequently Asked Questions
What are CSS custom properties?
CSS custom properties (variables) defined with --prefix store reusable values that cascade through the DOM and can be changed dynamically with JavaScript.
How to use CSS variables?
Define with --primary-color: #2563eb; on :root, then use var(--primary-color) anywhere. Variables enable consistent theming across your stylesheet.
Can CSS variables be changed at runtime?
Yes, CSS variables can be updated with JavaScript by setting element.style.setProperty('--variable-name', value), enabling dynamic theming without preprocessors.
What are CSS custom properties?
Variables defined in CSS, like a token set in a :root block, that can be reused and overridden for theming.
Can it generate a dark theme?
Yes, the tool outputs a light and a dark theme pair, so a site can switch themes by swapping one attribute.