Couleur.io

Couleur.io is a lightweight web tool that lets you pick a starter hue and adjust saturation to automatically create a balanced palette of ten color swatches. It generates ready‑to‑use CSS variables for primary and accent colors, with adjustable lightness and opacity levels. Preview palettes in light and dark contexts, copy the CSS code, and fine‑tune hues on the fly, saving time and ensuring consistent, modern color schemes across your sites.