Some technical notions:
The orange color is one of the radiation of the spectrum that man can see.
It is located between red and yellow and has a wavelength of about 620-585 nanometers.
It is the same color as the orange fruit from which it took its name; in fact, before the discovery of this fruit, there was not a precise notion of this color, which was often considered red.
For this reason, the use of phrases such as "goldfish", "red cats", "red hair" has remained in use, although these appear orange.
Art.photo Rosario Calì RO CA.