Hex #559c66 or rgb(85,156,102) in RGB space is the tint of bluish green. It has hue angle of 134.37 degrees, value = 61 and saturation = 46. #559c66 can be obtained by mixing 4 colors: 4 drops of red, 5 drops of cyan, 5 drops of green, 1 drop of white.
Nearest safe hex - #669966. Below you can see the block with #559c66 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559c66 to the mixer and play with it.