Hex #559913 or rgb(85,153,19) in RGB space is the tint of olive. It has hue angle of 90.45 degrees, value = 60 and saturation = 88. #559913 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of magenta, 5 drops of green, 1 drop of black.
Nearest safe hex - #669900. Below you can see the block with #559913 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #559913 to the mixer and play with it.