Hex #507e2b or rgb(80,126,43) in RGB space is the tint of olive. It has hue angle of 93.25 degrees, value = 49 and saturation = 66. #507e2b can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of blue, 3 drops of green, 4 drops of black.
Nearest safe hex - #666633. Below you can see the block with #507e2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #507e2b to the mixer and play with it.