If at all possible I use Tamiya paint on my models.

If you like WWII U.S. Navy planes, you have to have this paint. It’s the exact color for the F6F hellcats in the late war, and it has many other applications. For example, if you add just the tiniest amount of white to the paint (like 1 part white to 10-15 parts blue) you’ll get the color for U.S. Navy battleships in the early war (look up the USS Texas, you’ll see what I mean). It would also be a pretty sleek color for a sports car. Its consistency is a bit on the thick side, but thins well with water (though Tamiya also makes an acrylic thinner that is better), and if you thin it to 5-6 parts paint to 1 part water it will give a very nice brushstroke free look in 3-4 coats. Very good paint.

This is a great shade of blue. If you're having trouble finding or making a Navy Blue, this is a perfect substitute. Also, Tamiya is fantastic for paint (as well as models), washes off your brush easily.