Hex #40642b or rgb(64,100,43) in RGB space is the tint of grass green. It has hue angle of 97.89 degrees, value = 39 and saturation = 57. #40642b can be obtained by mixing 4 colors: 3 drops of red, 2 drops of cyan, 4 drops of green, 3 drops of black.
Nearest safe hex - #336633. Below you can see the block with #40642b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #40642b to the mixer and play with it.