Hex #404a40 or rgb(64,74,64) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 29 and saturation = 14. #404a40 can be obtained by mixing 4 colors: 3 drops of red, 3 drops of cyan, 1 drop of green, 5 drops of black.
Nearest safe hex - #333333. Below you can see the block with #404a40 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #404a40 to the mixer and play with it.