Hex #55b542 or rgb(85,181,66) in RGB space is the tint of grass green. It has hue angle of 110.09 degrees, value = 71 and saturation = 64. #55b542 can be obtained by mixing 4 colors: 3 drops of yellow, 2 drops of blue, 1 drop of cyan, 3 drops of green.
Nearest safe hex - #66cc33. Below you can see the block with #55b542 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55b542 to the mixer and play with it.