Hex #397d68 or rgb(57,125,104) in RGB space is the tint of greenish cian. It has hue angle of 161.47 degrees, value = 49 and saturation = 54. #397d68 can be obtained by mixing 4 colors: 4 drops of yellow, 5 drops of blue, 4 drops of cyan, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #397d68 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #397d68 to the mixer and play with it.