Hex #003a56 or rgb(0,58,86) in RGB space is the tint of bluish cian. It has hue angle of 199.53 degrees, value = 34 and saturation = 100. #003a56 can be obtained by mixing 3 colors: 4 drops of blue, 1 drop of green, 3 drops of black.
Nearest safe hex - #003366. Below you can see the block with #003a56 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #003a56 to the mixer and play with it.