Hex #808600 or rgb(128,134,0) in RGB space is the tint of yellow. It has hue angle of 62.69 degrees, value = 53 and saturation = 100. #808600 can be obtained by mixing 4 colors: 3 drops of yellow, 1 drop of red, 2 drops of green, 2 drops of black.
Nearest safe hex - #999900. Below you can see the block with #808600 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #808600 to the mixer and play with it.