Hex #406530 or rgb(64,101,48) in RGB space is the tint of grass green. It has hue angle of 101.89 degrees, value = 40 and saturation = 52. #406530 can be obtained by mixing 4 colors: 4 drops of red, 3 drops of cyan, 5 drops of green, 4 drops of black.
Nearest safe hex - #336633. Below you can see the block with #406530 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406530 to the mixer and play with it.