Hex #559c94 or rgb(85,156,148) in RGB space is the tint of cyan. It has hue angle of 173.24 degrees, value = 61 and saturation = 46. #559c94 can be obtained by mixing 4 colors: 4 drops of magenta, 5 drops of cyan, 5 drops of green, 1 drop of white.
Nearest safe hex - #669999. Below you can see the block with #559c94 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559c94 to the mixer and play with it.