I love blue because it is amongst the  three primary colours of pigments in painting and traditional colour theory, do you?
I do like blue.  What are the other two primary colors?
I'm not sure but what I know is that it  is  in the middle of violet and green on the spectrum of visible light
That is great.  Isn't blue one of the colors of the rainbow?
Correct, it is another interesting fact is that wavelength between approximately 450 and 495 nm
I wonder what that means?
Blue is a mix of other colors just as azure has green and ultramarine violet