Enter any website URL and this tool reads the site's actual CSS — every linked stylesheet, fetched through our proxy and parsed right in your browser — and distills it into a design system: the color palette with guessed roles (background, text, primary), font stacks and type scale, the spacing grid, border radii, and shadows. Sites that define design tokens as CSS custom properties get those lifted verbatim.
Add a second site (up to four) to build a blend: take one brand's colors and another's typography, preview the combination on a sample page, then export the result as CSS variables, a Tailwind v4 theme or v3 config, or W3C design-tokens JSON.
One honest limit: this analyzes static CSS. Sites that inject all styling at runtime (some CSS-in-JS setups) may return sparse results — try another page on the same domain. For related tools, see the color palette generator, image color palette, contrast checker, box shadow generator, border radius generator, and the full SEO analyzer.