Hex #55aa47 or rgb(85,170,71) in RGB space is the tint of grass green. It has hue angle of 111.52 degrees, value = 67 and saturation = 58. #55aa47 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of magenta, 1 drop of cyan, 3 drops of green.
Nearest safe hex - #669933. Below you can see the block with #55aa47 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55aa47 to the mixer and play with it.