Fine do you want to call it a violet onion then? They are basically the exact same damn thing and violet is a wavelength

You’re right about our perception but the color spectrum is based on wavelengths and doesn’t represent color mixing. It only does that when you make a circle out of it and then you see purple between blue and red and that’s your standard RGB color wheel.

Colored lights do mix. It’s called an additive color since you are adding different lights to create a new color. So red and blue light does Infact create purple light and to get green you have to mix red and yellow light. Mixing RGB or CMY creates white this way.

The other is subtractive color mixing, like when we paint, to get green we mix blue and yellow instead. Mixing CMY, RYB or RGB would give you black.

Thanks for the TIL

Just because violet light triggers both red and blue receptors in our eyes, that doesn’t mean there is only discrete red and blue light hitting them. It’s just that light with 380nm to 450nm wavelength triggers both typed of receptors. So there is violet light.