Hex #407639 or rgb(64,118,57) in RGB space is the tint of green. It has hue angle of 113.11 degrees, value = 46 and saturation = 52. #407639 can be obtained by mixing 4 colors: 1 drop of magenta, 5 drops of green, 2 drops of white, 4 drops of black.
Nearest safe hex - #336633. Below you can see the block with #407639 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407639 to the mixer and play with it.