Hex #398b1c or rgb(57,139,28) in RGB space is the tint of grass green. It has hue angle of 104.32 degrees, value = 55 and saturation = 80. #398b1c can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of cyan, 3 drops of green, 3 drops of black.
Nearest safe hex - #339933. Below you can see the block with #398b1c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #398b1c to the mixer and play with it.