Hex #39771c or rgb(57,119,28) in RGB space is the tint of grass green. It has hue angle of 100.88 degrees, value = 47 and saturation = 76. #39771c can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of cyan, 2 drops of green, 4 drops of black.
Nearest safe hex - #336633. Below you can see the block with #39771c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #39771c to the mixer and play with it.