Hex #55adc7 or rgb(85,173,199) in RGB space is the tint of bluish cian. It has hue angle of 193.68 degrees, value = 78 and saturation = 57. #55adc7 can be obtained by mixing 4 colors: 1 drop of red, 1 drop of blue, 3 drops of cyan, 1 drop of white.
Nearest safe hex - #6699cc. Below you can see the block with #55adc7 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55adc7 to the mixer and play with it.