The Colors tool

Colors: pick any pixel on screen and copy it

A loupe follows your pointer. Click a pixel and copy it as HEX, RGB, HSL or SwiftUI.

Uses macOS's own colour sampler.
Copy as HEX, RGB, HSL or a SwiftUI Color line.
Keeps your last 12 picks, one click to copy again.

Questions, answered.

Does it work across displays?

Yes, anywhere on any screen.