Hex #397997 or rgb(57,121,151) in RGB space is the tint of bluish cian. It has hue angle of 199.15 degrees, value = 59 and saturation = 62. #397997 can be obtained by mixing 4 colors: 2 drops of red, 2 drops of blue, 4 drops of cyan, 1 drop of black.
Nearest safe hex - #336699. Below you can see the block with #397997 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #397997 to the mixer and play with it.