Hex #55a395 or rgb(85,163,149) in RGB space is the tint of greenish cian. It has hue angle of 169.23 degrees, value = 64 and saturation = 48. #55a395 can be obtained by mixing 4 colors: 1 drop of yellow, 4 drops of cyan, 3 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #55a395 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55a395 to the mixer and play with it.