Hex #398d72 or rgb(57,141,114) in RGB space is the tint of greenish cian. It has hue angle of 160.71 degrees, value = 55 and saturation = 60. #398d72 can be obtained by mixing 4 colors: 3 drops of blue, 3 drops of green, 2 drops of white, 1 drop of black.
Nearest safe hex - #339966. Below you can see the block with #398d72 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #398d72 to the mixer and play with it.