Hex #397913 or rgb(57,121,19) in RGB space is the tint of grass green. It has hue angle of 97.65 degrees, value = 47 and saturation = 84. #397913 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of blue, 3 drops of green, 3 drops of black.
Nearest safe hex - #336600. Below you can see the block with #397913 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #397913 to the mixer and play with it.