Hex #55d7c6 or rgb(85,215,198) in RGB space is the tint of greenish cian. It has hue angle of 172.15 degrees, value = 84 and saturation = 60. #55d7c6 can be obtained by mixing 4 colors: 1 drop of yellow, 5 drops of cyan, 2 drops of white, 1 drop of black.
Nearest safe hex - #66cccc. Below you can see the block with #55d7c6 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55d7c6 to the mixer and play with it.