Yes. I mean: there are colors that, despite being detected by our brain, are not translated by our optical system, and we end up seeing them as white. Colors are formed in our mind from three primary lights: red, green and blue. The mixtures between these lights form all the other colors we can see, but some mixtures cannot be translated by human eyes – although other eyes, such as those of some insects, can see them. “Invisible” colors are mixtures of complementary lights, such as blue and orange, red and green, purple and yellow. “There is no blue-yellow or green-red color”, says physicist Oswaldo Cruz Martins, from the Technological Research Institute of the State of São Paulo. In addition, there are light radiations that are outside the range to which the human eye has adapted, which goes from red to violet, the colors of the rainbow. Radiation below or above this range can only be seen by very few people, in addition to some animals and insects. Finally, there is a linguistic issue: we are not used to some nuances of colors and, therefore, we do not have words to describe them – the Eskimos, for example, describe dozens of nuances of snow white, but we do not.
