Hex #55b899 or rgb(85,184,153) in RGB space is the tint of greenish cian. It has hue angle of 161.21 degrees, value = 72 and saturation = 54. #55b899 can be obtained by mixing 4 colors: 4 drops of cyan, 3 drops of green, 5 drops of white, 3 drops of black.
Nearest safe hex - #66cc99. Below you can see the block with #55b899 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55b899 to the mixer and play with it.