Hex #397498 or rgb(57,116,152) in RGB space is the tint of blue. It has hue angle of 202.74 degrees, value = 60 and saturation = 63. #397498 can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of green, 2 drops of white, 1 drop of black.
Nearest safe hex - #336699. Below you can see the block with #397498 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #397498 to the mixer and play with it.