Hex #406b2b or rgb(64,107,43) in RGB space is the tint of grass green. It has hue angle of 100.31 degrees, value = 42 and saturation = 60. #406b2b can be obtained by mixing 4 colors: 3 drops of yellow, 3 drops of blue, 2 drops of green, 4 drops of black.
Nearest safe hex - #336633. Below you can see the block with #406b2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406b2b to the mixer and play with it.