Hex #559156 or rgb(85,145,86) in RGB space is the tint of green. It has hue angle of 121.00 degrees, value = 57 and saturation = 41. #559156 can be obtained by mixing 3 colors: 2 drops of yellow, 3 drops of blue, 1 drop of green.
Nearest safe hex - #669966. Below you can see the block with #559156 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559156 to the mixer and play with it.