Hex #55b661 or rgb(85,182,97) in RGB space is the tint of green. It has hue angle of 127.42 degrees, value = 71 and saturation = 53. #55b661 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of blue, 3 drops of cyan, 3 drops of green.
Nearest safe hex - #66cc66. Below you can see the block with #55b661 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55b661 to the mixer and play with it.