ColorScan

With ColorScan you can find a concrete colour from a picture or a drawing. To know a colour, you must only load the picture or the drawing and ColorScan analizes its RGB features, ColorScan also reports its hexadecimal code.
Moreover, you can also capture an image with the camera and the image can be analized by ColorScan.
ColorScan is extremely simple to operate, you only must capture an image with the phone camera or load it from the internal memory of the device. Then, when the image is placed on the main screen, push on the region where you want to know the color and ColorScan will report you the colour code immediately.
An issue that you must have in your mind, it is the colour variation that you obtain when you use flash in the camera capture. Remember the colour varies enormously depending on the light that falls on it.