Color pickers are dedicated applications used for creating color schemes and grabbing color codes for later use.
They are usually used by web designers to create color harmonization interfaces or to quickly converting HSL and RGB color codes.
These tools allow users to choose any desktop color and automatically visualize its color code, then copy it to the clipboard and use it in their projects.
Colors pickers can be standalone apps, but they may also be integrated within graphic editors, thus enhancing their functionality.