I love the color blue!  In fact, it's the color of my favorite basketball team.
Blue is one of the three primary colours! My favorite is Green actually.
Yes it is.  Of course you have to mix blue to get green!
Blue actually lies between violet and green on the spectrum
that is interesting to know.  How many colors are on the spectrum?
There are an infinite colors! But there are seven main colors, but back to Blue, Blue has been an important colour in art and decoration.
Did any artists focus primarily on the color blue?
There were a lot of artists that used blue, like Pablo Picasso and also, In the Middle Ages, European artists who used it in the windows of Cathedrals.
Blue would definitely be beautiful in cathedral windows...it was probably considered heavenly in the middle ages.
An optical effect called Tyndall scattering explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.
Blue has been an important colour in art and decoration since ancient times. The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain. In the Middle Ages, European artists used
Blue
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering.