Hex #406339 or rgb(64,99,57) in RGB space is the tint of grass green. It has hue angle of 110.00 degrees, value = 39 and saturation = 42. #406339 can be obtained by mixing 3 colors: 3 drops of red, 4 drops of blue, 5 drops of green.
Nearest safe hex - #336633. Below you can see the block with #406339 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406339 to the mixer and play with it.