Hex #405d40 or rgb(64,93,64) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 36 and saturation = 31. #405d40 can be obtained by mixing 4 colors: 4 drops of red, 4 drops of cyan, 3 drops of green, 5 drops of black.
Nearest safe hex - #336633. Below you can see the block with #405d40 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405d40 to the mixer and play with it.