Hex #558955 or rgb(85,137,85) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 54 and saturation = 38. #558955 can be obtained by mixing 4 colors: 2 drops of magenta, 1 drop of blue, 5 drops of green, 1 drop of white.
Nearest safe hex - #669966. Below you can see the block with #558955 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #558955 to the mixer and play with it.