Hex #409f2b or rgb(64,159,43) in RGB space is the tint of grass green. It has hue angle of 109.14 degrees, value = 62 and saturation = 73. #409f2b can be obtained by mixing 4 colors: 3 drops of yellow, 2 drops of cyan, 4 drops of green, 3 drops of black.
Nearest safe hex - #339933. Below you can see the block with #409f2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #409f2b to the mixer and play with it.