Hex #8f8300 or rgb(143,131,0) in RGB space is the tint of yellow. It has hue angle of 54.97 degrees, value = 56 and saturation = 100. #8f8300 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of red, 5 drops of green, 2 drops of black.
Nearest safe hex - #999900. Below you can see the block with #8f8300 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8f8300 to the mixer and play with it.