Hex #99a722 or rgb(153,167,34) in RGB space is the tint of yellow. It has hue angle of 66.32 degrees, value = 65 and saturation = 80. #99a722 can be obtained by mixing 3 colors: 2 drops of yellow, 1 drop of magenta, 2 drops of green.
Nearest safe hex - #999933. Below you can see the block with #99a722 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99a722 to the mixer and play with it.