Hex #397d39 or rgb(57,125,57) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 49 and saturation = 54. #397d39 can be obtained by mixing 4 colors: 2 drops of yellow, 2 drops of cyan, 1 drop of green, 4 drops of black.
Nearest safe hex - #336633. Below you can see the block with #397d39 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #397d39 to the mixer and play with it.