Hex #558855 or rgb(85,136,85) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 53 and saturation = 38. #558855 can be obtained by mixing 4 colors: 2 drops of red, 3 drops of blue, 5 drops of green, 2 drops of white.
Nearest safe hex - #669966. Below you can see the block with #558855 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #558855 to the mixer and play with it.