Just Color Picker - Free portable colour picker and colour editor for web designers, photographers, graphic designers and digital artists. Supports Windows and macOS.
Color Palette Generator - Enter the URL of an image and find its color palette
Sip - A better way to collect, organize & share your colors.
Materialette - A material design color palette on macOS / Windows / Linux
Instant Eyedropper - Identifying the color code of an object on the screen is usually an involved, multistep process:...
Material Palette - Generate and export your Material Design color palette