Hex #55d163 or rgb(85,209,99) in RGB space is the tint of green. It has hue angle of 126.77 degrees, value = 82 and saturation = 59. #55d163 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of blue, 4 drops of cyan, 3 drops of green.
Nearest safe hex - #66cc66. Below you can see the block with #55d163 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55d163 to the mixer and play with it.