Color Pickers

Pigment is a tool for getting color palettes from images. Free and open source program

Paleta – search for the dominant color palette in an image and manage palettes. A free and open source program

Eyedropper is an easy-to-use color picker and editing tool. Free and open source program

Colorway is a free and open source program for generate color pairings

Emulsion is a free and open source simple program for storing and editing palettes

KColorChooser is a free and open source small and simple program for mixing colors and creating custom color palettes

ColorMate is a free and open source small app for converting color between three notations #rgb, rgb() and hsl() for Linux

Colorpicker a free and open source cross platform desktop software for determining the color on the screen