Just Color Picker - Free portable colour picker and colour editor for web designers, photographers, graphic designers and digital artists. Supports Windows and macOS.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Sip - A better way to collect, organize & share your colors.
Sketch - Professional digital design for Mac.
Instant Eyedropper - Identifying the color code of an object on the screen is usually an involved, multistep process:...
Affinity Designer - Professional creative software, exclusively for Mac.