Hex #39731c or rgb(57,115,28) in RGB space is the tint of grass green. It has hue angle of 100.00 degrees, value = 45 and saturation = 76. #39731c can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of green, 1 drop of white, 4 drops of black.
Nearest safe hex - #336633. Below you can see the block with #39731c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #39731c to the mixer and play with it.