Hex #405b40 or rgb(64,91,64) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 36 and saturation = 30. #405b40 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of cyan, 1 drop of white, 5 drops of black.
Nearest safe hex - #336633. Below you can see the block with #405b40 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405b40 to the mixer and play with it.