Hex #40672b or rgb(64,103,43) in RGB space is the tint of grass green. It has hue angle of 99.00 degrees, value = 40 and saturation = 58. #40672b can be obtained by mixing 4 colors: 1 drop of red, 4 drops of green, 2 drops of white, 5 drops of black.
Nearest safe hex - #336633. Below you can see the block with #40672b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40672b to the mixer and play with it.