Hex #55aa5b or rgb(85,170,91) in RGB space is the tint of green. It has hue angle of 124.24 degrees, value = 67 and saturation = 50. #55aa5b can be obtained by mixing 4 colors: 5 drops of yellow, 5 drops of blue, 2 drops of cyan, 3 drops of green.
Nearest safe hex - #669966. Below you can see the block with #55aa5b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55aa5b to the mixer and play with it.