Hex #9f8f15 or rgb(159,143,21) in RGB space is the tint of yellow. It has hue angle of 53.04 degrees, value = 62 and saturation = 87. #9f8f15 can be obtained by mixing 4 colors: 3 drops of yellow, 2 drops of red, 1 drop of blue, 2 drops of green.
Nearest safe hex - #999900. Below you can see the block with #9f8f15 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #9f8f15 to the mixer and play with it.