A particular RGB color space is defined by the three chromaticities of the Red, Green, and Blue additive primaries,
and can produce any chromaticity that is the triangle defined by those primary colors.
The complete specification of an RGB color space also requires a white point chromaticity
and a gamma correction curve.
In Html we use this system to define the color of an object.
The colors are defined by setting three values from 0 to 255 in round brackets,
so rgb(255, 0, 0) means red, rgb(0, 255, 0) means green and rgb(0, 0, 255) means blue.