So imagine there is a new color but we can't process it. Like we are blind for that color because we never saw it.
Most Helpful Girl
Well, techinally there won't be any new colors because they simply occupy a range of frequencies on the electromagnetic spectrum. However, you are right in that our fotoreceptors will only pick up a certain range of those frequencies where some other animals can "see" a broader range of frequencies that we cannot. And note that color balance is also affected by the types of receptors we have, so what we see isn't necessarily reality, it is how humans perceive the world around us.0
Most Helpful Guy
Really there is no such thing as a new color. Light is a specific range of electromagnetic radiation frequencies where red has low frequency (longer wavelength) and violet has high frequency (shorter wavelength). You can see every color in between. If you shorten the wavelengths beyond violet, you get ultraviolet light. If you lengthen wavelengths beyond red, you get infrared, neither of which humans can see. Even longer wavelengths become radio waves and microwaves. Even shorter wavelengths become X-rays and gamma rays.
You could look at microwaves or X-rays as colors humans can't see. Every one of these "colors" already exists.
It might be possible to evolve or genetically engineer sensitivity to radiation beyond the visible spectrum. Boa constrictors are thought to "see" infrared, for example. Some insects and fish see UV light.0