Blue is my favorite color!  Is it yours?
I do like blue. I like blues with a greenish hue, like azure. But other blues like ultramarine are pretty, too.
How does the different shades of blue come about?
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.
English the light blues like azure and cyan are considered mere shades of "blue" and not different colors. Russian word for "green" is зелёный, zielioniy.
To better understand this, consider that English makes a similar distinction between "red" and light red (pink, which is considered a different color and not merely a kind of red), but such a distinction is unknown in several other languages; for example, both "red" ( / , "hóng") and "pink" (