#42 Are You Aware of the ‘Impossible Colours’ Theory?
There are some colours. colloquially known as the “impossible colours”, that the human eye can’t comprehend. A normal person has three cone cells in the retina called trichromats.
Hence, there are some colours that are only visible to people having 4 cone cells as they possess the strength to observe these colours. Some of these unbelievable colours can be seen by mixing colour signals from both the eyes or by observing the fatigue templates.