Hex #407739 or rgb(64,119,57) in RGB space is the tint of green. It has hue angle of 113.23 degrees, value = 47 and saturation = 52. #407739 can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of red, 4 drops of blue, 5 drops of green.
Nearest safe hex - #336633. Below you can see the block with #407739 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #407739 to the mixer and play with it.