Hex #808b2b or rgb(128,139,43) in RGB space is the tint of yellow. It has hue angle of 66.88 degrees, value = 55 and saturation = 69. #808b2b can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of red, 1 drop of cyan, 2 drops of green.
Nearest safe hex - #999933. Below you can see the block with #808b2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #808b2b to the mixer and play with it.