Hex #55be9f or rgb(85,190,159) in RGB space is the tint of greenish cian. It has hue angle of 162.29 degrees, value = 75 and saturation = 55. #55be9f can be obtained by mixing 4 colors: 2 drops of magenta, 5 drops of cyan, 5 drops of green, 3 drops of white.
Nearest safe hex - #66cc99. Below you can see the block with #55be9f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55be9f to the mixer and play with it.