 A color intermediate between blue and red is purple
That's interesting. I didn't know that is what it's called. What else can you tell me?
unlike violet, which is a spectral color with its own wavelength on the visible spectrum of light, purple is a composite color made by combining red and blue.
I had no idea that violet was so different. 
On the screens of computer monitors and television sets, a color which looks similar to violet is made, with the RGB color model