Color Scanner APP
You can save the color for later use in the list. From the list you can click the eye and get lots of professional information about the color. Or show the color in fullscreen. Then, share the color as an image with other image apps or social media if you want.
Alternatively, you can pick an image from your gallary and retrieve via the movable rectangle a color from the image.
The app is easy to use, and containes a help screen if you need it.