Why Need Design
We differentiate the current color models depending on the media they will be displayed on and the purpose of the visual presentation. We might leave out some colors which are not visible on the screens or include those which are not visible by the eye. Modern color technology is controlled by mathematics. But the problem is the variability of conditions under which we see these colors.
A modern color theory puts our brain in charge of our color perception depending on the context and looks to find the schemes and methods of producing colors accordingly.