Hex #507920 or rgb(80,121,32) in RGB space is the tint of olive. It has hue angle of 87.64 degrees, value = 47 and saturation = 74. #507920 can be obtained by mixing 4 colors: 5 drops of yellow, 3 drops of blue, 3 drops of green, 5 drops of black.
Nearest safe hex - #666633. Below you can see the block with #507920 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #507920 to the mixer and play with it.