Hex #55bf99 or rgb(85,191,153) in RGB space is the tint of greenish cian. It has hue angle of 158.49 degrees, value = 75 and saturation = 55. #55bf99 can be obtained by mixing 4 colors: 3 drops of blue, 2 drops of cyan, 5 drops of green, 5 drops of white.
Nearest safe hex - #66cc99. Below you can see the block with #55bf99 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55bf99 to the mixer and play with it.