Hex #55c240 or rgb(85,194,64) in RGB space is the tint of grass green. It has hue angle of 110.31 degrees, value = 76 and saturation = 67. #55c240 can be obtained by mixing 4 colors: 3 drops of yellow, 1 drop of red, 3 drops of cyan, 5 drops of green.
Nearest safe hex - #66cc33. Below you can see the block with #55c240 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55c240 to the mixer and play with it.