Hex #999f22 or rgb(153,159,34) in RGB space is the tint of yellow. It has hue angle of 62.88 degrees, value = 62 and saturation = 79. #999f22 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of red, 2 drops of cyan, 4 drops of green.
Nearest safe hex - #999933. Below you can see the block with #999f22 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #999f22 to the mixer and play with it.