Hex #55d4bd or rgb(85,212,189) in RGB space is the tint of greenish cian. It has hue angle of 169.13 degrees, value = 83 and saturation = 60. #55d4bd can be obtained by mixing 4 colors: 1 drop of blue, 3 drops of cyan, 2 drops of green, 3 drops of white.
Nearest safe hex - #66cccc. Below you can see the block with #55d4bd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55d4bd to the mixer and play with it.