# CSS Variables

Browse 8 online CSS Variables tools for working with CSS custom properties in your browser. Text inputs are not stored, and uploaded files are deleted after 6 hours.

> Canonical page: https://elysiatools.com/en/tags/css-variables

## Overview

Use this collection of 8 CSS Variables tools to work with CSS custom properties through browser-based interfaces, with no software installation required.

## Frequently asked questions

### What can I do with CSS Variables tools?

You can work with CSS variables and custom properties using the available browser-based tools in this category.

### Do I need to install software?

No software installation is required. You can access these CSS Variables tools through your browser.

### How is my data handled?

Tools are operated through the browser, while processing runs on Elysia Tools servers. Text inputs are not stored, and uploaded files are automatically deleted after 6 hours.

## Tools

- [Color Palette Extractor from Image URL](https://elysiatools.com/en/tools/color-palette-extractor-from-image-url): Fetch a remote image URL, extract dominant colors, export code-ready palette files, and review contrast ratios
- [Color Token Cascade Generator](https://elysiatools.com/en/tools/color-token-cascade-generator): Turn one primary hex color into a full design-token cascade with primary, accent, neutral, semantic tokens, CSS variables, and Style Dictionary JSON
- [ECharts Theme Token Extractor](https://elysiatools.com/en/tools/echarts-theme-token-extractor): Extract design tokens — colors, numbers, font sizes and strings — from an ECharts theme JSON and export them straight into your design system. Paste a theme object (the kind registered via echarts.init(dom, themeName)) and the tool walks every leaf, tagging each color (with optional named/rgb → hex normalization), spacing number, font size and string, then emits clean CSS variables, a Tailwind theme.extend config, Style Dictionary tokens.json, or SCSS variables. Bridges the gap between an ECharts visualization theme and Figma/CSS/Tailwind design tokens without copying each value by hand.
- [Figma Tokens Export](https://elysiatools.com/en/tools/figma-tokens-export): Paste a Figma / Tokens Studio variables JSON and export to Tailwind, shadcn CSS variables, Style Dictionary, or SCSS. Preserves color, spacing and font tokens with type inference.
- [Image Color Palette Extractor](https://elysiatools.com/en/tools/image-color-palette-extractor): Extract dominant colors from an image, export code-ready tokens, and check contrast ratios
- [Image Palette to Design Tokens](https://elysiatools.com/en/tools/image-to-design-tokens): Extract a dominant color palette from an image (k-means clustering), then export it as CSS variables, SCSS variables, a Tailwind config, or JSON design tokens — with named colors and an auto-generated shade scale for each
- [Tailwind Arbitrary Value Playground](https://elysiatools.com/en/tools/tailwind-arbitrary-value-playground): Paste Tailwind classes that use arbitrary values (w-\[137px\], text-\[#bada55\], grid-cols-\[1fr_2fr\], \[mask-type:luminance\]) and inspect the generated CSS, with a live visual preview, data-type hint detection, and an explanation of each translation. Useful for debugging calc(), CSS variables, and one-off values that escape the design token scale.
- [Tailwind Color Palette Sync](https://elysiatools.com/en/tools/tailwind-color-palette-sync): Generate theme.extend.colors for tailwind.config.ts from HEX colors, with WCAG contrast levels and optional dark mode.

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