Hex #406c2b or rgb(64,108,43) in RGB space is the tint of grass green. It has hue angle of 100.62 degrees, value = 42 and saturation = 60. #406c2b can be obtained by mixing 3 colors: 1 drop of red, 1 drop of blue, 2 drops of green.
Nearest safe hex - #336633. Below you can see the block with #406c2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406c2b to the mixer and play with it.