Color pickers, palettes & CSS generators
HEX/RGB/HSL/CMYK converters, WCAG contrast checker, palette and gradient generators, shadows, glassmorphism, grid and flexbox builders with one-click CSS export.
In-content · after first value section
Why DesignMatrix?
Coolors inspires; DesignMatrix ships the whole pipeline: pick → check contrast → harmonize → export CSS variables, Tailwind config and JSON tokens locally.
FAQ
Is it free?
Yes — every tool is free with no signup and no credits.
Is my data uploaded?
No. Tools run locally in your browser; files never leave your device. Check DevTools → Network.
Does it work offline?
After the first visit the app shell is cached, so calculators and generators keep working offline.
Does it work on mobile?
Yes — touch-friendly, one-tap download, adaptive workers for weak devices.
How do you make money?
Clearly-labeled ads, spaced away from buttons. No paywall, no fake download buttons.
Guides
Contrast ratios, demystified (WCAG) · Color harmony in 4 recipes · Shadows that look real — practical, original explainers with examples.