Hex #558f11 or rgb(85,143,17) in RGB space is the tint of olive. It has hue angle of 87.62 degrees, value = 56 and saturation = 88. #558f11 can be obtained by mixing 4 colors: 5 drops of yellow, 1 drop of cyan, 4 drops of green, 5 drops of black.
Nearest safe hex - #669900. Below you can see the block with #558f11 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #558f11 to the mixer and play with it.