Hex #397ab4 or rgb(57,122,180) in RGB space is the tint of blue. It has hue angle of 208.29 degrees, value = 71 and saturation = 68. #397ab4 can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of cyan, 2 drops of white, 1 drop of black.
Nearest safe hex - #3366cc. Below you can see the block with #397ab4 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #397ab4 to the mixer and play with it.