Hex #55a580 or rgb(85,165,128) in RGB space is the tint of teal. It has hue angle of 152.25 degrees, value = 65 and saturation = 48. #55a580 can be obtained by mixing 4 colors: 3 drops of red, 5 drops of cyan, 3 drops of green, 1 drop of white.
Nearest safe hex - #669999. Below you can see the block with #55a580 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55a580 to the mixer and play with it.