Hex #55910e or rgb(85,145,14) in RGB space is the tint of olive. It has hue angle of 87.48 degrees, value = 57 and saturation = 90. #55910e can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of blue, 4 drops of green, 3 drops of black.
Nearest safe hex - #669900. Below you can see the block with #55910e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55910e to the mixer and play with it.