Hex #406239 or rgb(64,98,57) in RGB space is the tint of grass green. It has hue angle of 109.76 degrees, value = 38 and saturation = 42. #406239 can be obtained by mixing 4 colors: 3 drops of yellow, 4 drops of blue, 1 drop of green, 4 drops of black.
Nearest safe hex - #336633. Below you can see the block with #406239 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406239 to the mixer and play with it.