Hex #5598a1 or rgb(85,152,161) in RGB space is the tint of cyan. It has hue angle of 187.11 degrees, value = 63 and saturation = 47. #5598a1 can be obtained by mixing 4 colors: 2 drops of red, 1 drop of magenta, 5 drops of cyan, 1 drop of green.
Nearest safe hex - #669999. Below you can see the block with #5598a1 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5598a1 to the mixer and play with it.