Swatches - A fun and accurate color picker for the real world
Just Color Picker - Free portable colour picker and colour editor for web designers, photographers, graphic designers and digital artists. Supports Windows and macOS.
ColorSnapper - The missing color picker for Mac.
Instant Eyedropper - Identifying the color code of an object on the screen is usually an involved, multistep process:...
Colordot for iOS - A color picker for humans.
Sip - A better way to collect, organize & share your colors.