Hex #55c039 or rgb(85,192,57) in RGB space is the tint of grass green. It has hue angle of 107.56 degrees, value = 75 and saturation = 70. #55c039 can be obtained by mixing 4 colors: 3 drops of yellow, 2 drops of cyan, 3 drops of green, 1 drop of black.
Nearest safe hex - #66cc33. Below you can see the block with #55c039 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55c039 to the mixer and play with it.