Hex #9f9f20 or rgb(159,159,32) in RGB space is the tint of yellow. It has hue angle of 60.00 degrees, value = 62 and saturation = 80. #9f9f20 can be obtained by mixing 4 colors: 2 drops of yellow, 2 drops of red, 3 drops of green, 1 drop of white.
Nearest safe hex - #999933. Below you can see the block with #9f9f20 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #9f9f20 to the mixer and play with it.