Start with blue paint
Add a very small amount of black paint
Mix thoroughly
Add tiny amounts of white paint if needed to adjust brightness
Test the color on a sample surface
Adjust with more blue, black, or white until it looks like navy blue
Start with blue paint
Add a very small amount of black paint
Mix thoroughly
Add tiny amounts of white paint if needed to adjust brightness
Test the color on a sample surface
Adjust with more blue, black, or white until it looks like navy blue