Blue is a color that lies between violet and green on the spectrum of visible light.
Tell me more about the spectrum of visible light
Well... my understanding is that light is electromagnetic radiation.
ok are there any colors outside the spectrum?
In a manner of speaking. Wavelengths less than 390nm or greater than 700nm wouldn't really have a color.
ok thats alot of techy information for a non techy guy but good to know :)
Heh. Well people just see color in different ways. It's quite personal. But color doesn't mean much if it is outside the visible spectrum.
can we relate the rainbow to a spectrum? since there are so many colors at once being displayed
Yeah. You can think of the rainbow as a part of the spectrum. But imagine millions of 'invisible' colors extending beyond the ROYGBIV you can see.