Hex #55cb44 or rgb(85,203,68) in RGB space is the tint of grass green. It has hue angle of 112.44 degrees, value = 80 and saturation = 67. #55cb44 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of cyan, 5 drops of green, 1 drop of black.
Nearest safe hex - #66cc33. Below you can see the block with #55cb44 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55cb44 to the mixer and play with it.