Hex #55b5c7 or rgb(85,181,199) in RGB space is the tint of bluish cian. It has hue angle of 189.47 degrees, value = 78 and saturation = 57. #55b5c7 can be obtained by mixing 4 colors: 3 drops of blue, 2 drops of cyan, 1 drop of green, 3 drops of white.
Nearest safe hex - #66cccc. Below you can see the block with #55b5c7 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55b5c7 to the mixer and play with it.