Just add small amounts of black into blue paint. But make sure you just add very small amounts at a time otherwise you'll might just get midnight blue.
The colors you mix with sky blue to get navy blue would be a dark blue or a black. These will make a navy blue.
Yellow and Blue.
Red and blue make purple.
red and blue
yellow and blue.
blue
none
Red, blue and green make yellow
You cannot mix any color with blue to get red. Blue and red are primary colors.
To make light blue mix blue with white. Start with the white and add a little blue at a time until you have the shade you want.
blue & red. blue & red.
You mean red, blue, and yellow. The primary colors are the only colors that you can not get by mixing other colors together. For example, you can mix red and blue to make purple, but there are no two colors that will mix to make red nor blue. Those three colors are like the bases of all colors.