Hex #55ccd0 or rgb(85,204,208) in RGB space is the tint of cyan. It has hue angle of 181.95 degrees, value = 82 and saturation = 59. #55ccd0 can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of blue, 4 drops of cyan, 2 drops of white.
Nearest safe hex - #66cccc. Below you can see the block with #55ccd0 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55ccd0 to the mixer and play with it.