Hex #559566 or rgb(85,149,102) in RGB space is the tint of bluish green. It has hue angle of 135.94 degrees, value = 58 and saturation = 43. #559566 can be obtained by mixing 4 colors: 1 drop of cyan, 4 drops of green, 5 drops of white, 5 drops of black.
Nearest safe hex - #669966. Below you can see the block with #559566 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559566 to the mixer and play with it.