Hex #55a5aa or rgb(85,165,170) in RGB space is the tint of cyan. It has hue angle of 183.53 degrees, value = 67 and saturation = 50. #55a5aa can be obtained by mixing 4 colors: 3 drops of magenta, 5 drops of cyan, 3 drops of green, 1 drop of white.
Nearest safe hex - #669999. Below you can see the block with #55a5aa color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55a5aa to the mixer and play with it.