My favorite color is blue.  How about you?
Mine is red. But there are some beautiful blues that l love.
Blue and red are primary colors of pigments in many paintings.
I hadn't noticed that. There are so many shades of blue, so I can see how that happens.
Yes, most blues have a mixture of other colors, for example, azue contains some green.
I think periwinkle blue is my favorite blue. What's yours?
Azure is my favorite.  It has blue and green colors.
Azure is a beautiful color.
In addition to azure, I like ultramarine since it contains violet. 
Ultramarine a gorgeous color. Teal would probably be my favorite blue-green blue.