Hex #55aab8 or rgb(85,170,184) in RGB space is the tint of bluish cian. It has hue angle of 188.48 degrees, value = 72 and saturation = 54. #55aab8 can be obtained by mixing 4 colors: 1 drop of blue, 4 drops of cyan, 4 drops of white, 3 drops of black.
Nearest safe hex - #6699cc. Below you can see the block with #55aab8 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55aab8 to the mixer and play with it.