Swach

Swach is a free, native color management app for macOS, Windows, and Linux. It offers a fast color picker that copies values to the clipboard, unlimited palette creation and organization, automatic color harmony generation (complementary, monochromatic, triad, etc.), and a built‑in WCAG contrast checker to ensure accessibility. Designed for designers who need a consistent workflow across all platforms, Swach streamlines color selection, experimentation, and documentation in one unified tool.