The best alternatives to Quanto: Material Palettes are Material Palette, Palette, and Reasonable Colors. If these 3 options don't work for you, we've listed a few more alternatives below.
Palette is just a quick experiment we launched along the way. As all digital designers, we are always looking for new color inspiration — and what better place to start than looking at new art we really like? So we just wanted to share this curated nifty little tool with all of you, hoping it brings you the color inspiration you need. ✌️
Reasonable Colors is an open-source color system for building accessible, nice-looking color palettes. It was purpose-built for creating accessible, high-contrast color combinations.