millions of distinct shades trichromatic vision I colori che vediamo source as 10 million colours. 10 million ability to distinguish millions of color put that number closer to 10 million 10 million colors https://hypertextbook.com/facts/2006/JenniferLeong.shtml millions of colors http://hypertextbook.com/facts/2006/Jen... spectral composition of light "Number of Colors Distinguishable by the Human Eye"