Hex #559ba1 or rgb(85,155,161) in RGB space is the tint of cyan. It has hue angle of 184.74 degrees, value = 63 and saturation = 47. #559ba1 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of magenta, 3 drops of blue, 3 drops of cyan.
Nearest safe hex - #669999. Below you can see the block with #559ba1 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559ba1 to the mixer and play with it.