Используйте приложение APKPure
Историческую версию Camera Color Picker можно получить на Android
Сделайте снимок или выберите один из галереи и определите цвета затронутых точек.
Make or take a photo and detect the color of any touched point, Pick color from image.
Zoom and pan while looking to image.
Show hex code, RGB values, and the color preview.
The application will show three results for each color:
✓ RGB: Amount of red, green and blue of the color. This information is exact as is. Values are between 0 and 255.
✓ HEX: Amount of red, green and blue in hexadecimal system. The colors are the same as in RGB but with base-16 number system, with HEX code you can make web designs easily.