Hex #399ea1 or rgb(57,158,161) in RGB space is the tint of cyan. It has hue angle of 181.73 degrees, value = 63 and saturation = 65. #399ea1 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of magenta, 5 drops of cyan, 2 drops of black.
Nearest safe hex - #339999. Below you can see the block with #399ea1 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #399ea1 to the mixer and play with it.