Hex #559297 or rgb(85,146,151) in RGB space is the tint of cyan. It has hue angle of 184.55 degrees, value = 59 and saturation = 44. #559297 can be obtained by mixing 4 colors: 1 drop of red, 2 drops of magenta, 4 drops of cyan, 2 drops of green.
Nearest safe hex - #669999. Below you can see the block with #559297 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559297 to the mixer and play with it.