Truecolor is a method of representing and storing graphical image information that allows a very large number of colors, shades, and hues to be displayed in an image, such as in high quality photographic images or complex graphics. Truecolor defines 256 shades of red, green, and blue for each pixel of the digital picture, which ultimately results in 224 or 16,777,216 (approximately 16.7 million) color variations for each pixel.
------------------- Deep Color is a term that refers to a gamut comprising of more than 16.7 millions of colors. Deep Color not only involves producing/displaying more shades of color (gamut), but also storing colors at a higher accuracy (bit depth). In the former sense, wide gamuts such as xvYCC, scRGB and Wide Gamut RGB color space fall within the purview of Deep Color. In the latter sense, there are multiple representations of Deep Color in RGB color model.
In 30-bit Integer RGB color representation, colors are stored in three 10-bits channels, resulting 30-bits of color data per pixel. This representation may be employed to store 210 or 1024 different values per channel, which enables the storage of 230 or 1,073,741,824 (approximately one billion) distinct colors.