What is RGB?
Red, green and blue are primary colours that are used to represent the colours on a computer screen. These three colours can be combined together at various proportions to obtain any colour visible on the colour spectrum. The intensity of R, G, and B can range from 0 to 100 that is the full intensity level of the colour. Combining these three colours together to form any, image to display them on computers, televisions and any other display screens. This is an additive method because when you add the 100 per cent of each colour you get white light.
How is RGB different from CMYK?
Combination of these colours also get the secondary colours CMYK, Cyan, Magenta, Yellow and Key (Black). CMYK are the secondary colours. This is a subtractive method because as the colours combine to the 100% the resulting colour is black, these colours are frequently used for printing.
How many colours can you get from different RGB values?
The total number of colours can be calculated by finding the number of RGB values that are possible. This is known as colour depth and it is measured in bits. The most depth here is 24 bits or true colour.
There are 8 bits for each of the three colours. This gives 256 colours for each of the 3 colours so, 256*256*256=16,777,216 colours you get from the true colour palette.