Hex #55d1aa or rgb(85,209,170) in RGB space is the tint of greenish cian. It has hue angle of 161.13 degrees, value = 82 and saturation = 59. #55d1aa can be obtained by mixing 4 colors: 4 drops of cyan, 3 drops of green, 4 drops of white, 1 drop of black.
Nearest safe hex - #66cc99. Below you can see the block with #55d1aa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55d1aa to the mixer and play with it.