ColorSnapper - The missing color picker for Mac.
Colordot for iOS - A color picker for humans.
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.
Colormate – Color Picker - Minimalist color picker & palette organizer
Color Copy Paste - Copy colors from your phone & paste on web, figma, or sketch