Выберите цвета в палитре или на экране - Choose colors from the picker or the screen
[ О приложении ]

Ever wanted to know the value of that color on your screen? Color Picker enables you to pick the color from any pixel on your screen.
It also offers a palette, so that you can easily mix and match a couple of colors together.

When you have found the perfect combination of colors, naturally you want to save them.
Color Picker allows you to conveniently save and retrieve colors.

Color Picker is a color selection dialog written in GTK 3.
It is much alike Gcolor2, but uses the newer GTK version and other modernisations to better integrate into your modern desktop.

Источник
Репозиторий: flathub

FlatPak: Color Picker [Graphics & Photography]