Hex #409540 or rgb(64,149,64) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 58 and saturation = 57. #409540 can be obtained by mixing 4 colors: 3 drops of yellow, 3 drops of cyan, 2 drops of green, 4 drops of black.
Nearest safe hex - #339933. Below you can see the block with #409540 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #409540 to the mixer and play with it.