Hex #399526 or rgb(57,149,38) in RGB space is the tint of grass green. It has hue angle of 109.73 degrees, value = 58 and saturation = 74. #399526 can be obtained by mixing 4 colors: 2 drops of yellow, 2 drops of blue, 4 drops of green, 1 drop of black.
Nearest safe hex - #339933. Below you can see the block with #399526 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #399526 to the mixer and play with it.