Hex #336491 or rgb(51,100,145) in RGB space is the tint of blue. It has hue angle of 208.72 degrees, value = 57 and saturation = 65. #336491 can be obtained by mixing 4 colors: 2 drops of red, 4 drops of blue, 3 drops of cyan, 1 drop of black.
Nearest safe hex - #336699. Below you can see the block with #336491 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #336491 to the mixer and play with it.