The rainbow is a phenomenon due to the optical dispersion of sunlight in raindrops. The passage through the rain leads the sunlight to separate into the different colors (wavelengths) that compose it.
First and foremost, it is critical to recognize that the color magenta is merely an illusion created by our eyes. This color, a mix of purple, red, and crimson, is very unique in that it does not appear in the visible spectrum of light and lacks a length of illumination that corresponds to that specific color. Furthermore, it is perceived physically and psychologically as a mix of red and blue. As a result, technically, the color magenta does not exist.
It is possible to create secondary colors by combining the three colors in different ways. A combination of blue and red, for example, produces viola. The way it works is that when the eye detects the stimulation of red and blue receptors, the brain also detects the absence of green.
This is important not only for being able to interpret colors instantly, but also for allowing the brain to correct the various color temperatures. We are able to see colors that do not exist in reality thanks to this process.Using this information about how our eyes work and imagining them in primary or secondary colors, we can saturate the corresponding cones and thus block other signals. Observing the opposite color on the color wheel will result in a saturated color, a color of imagination.