Atmos is a color palette generator with LCH-based shades and a built-in contrast checker, eliminating guesswork from color selection. Built for design teams managing complex color systems, this tool combines LCH and OKLCH color-space technology with intelligent shade generation so you can create perceptually uniform palettes in minutes, while contrast checkers and accessibility tools ensure every palette meets WCAG and APCA standards without manual testing. A built-in color wheel supports complementary, triadic, tetradic, and analogous harmony modes, and a Figma plugin syncs palettes directly into your design files. Trusted by 30,000+ designers and built in the EU by RBND studio, Atmos turns color decisions from guesswork into a repeatable, accessible system.