Hex #5588a1 or rgb(85,136,161) in RGB space is the tint of bluish cian. It has hue angle of 199.74 degrees, value = 63 and saturation = 47. #5588a1 can be obtained by mixing 4 colors: 1 drop of magenta, 3 drops of cyan, 2 drops of white, 3 drops of black.
Nearest safe hex - #669999. Below you can see the block with #5588a1 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5588a1 to the mixer and play with it.