Hex #999c22 or rgb(153,156,34) in RGB space is the tint of yellow. It has hue angle of 61.48 degrees, value = 61 and saturation = 78. #999c22 can be obtained by mixing 3 colors: 3 drops of yellow, 1 drop of blue, 1 drop of black.
Nearest safe hex - #999933. Below you can see the block with #999c22 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #999c22 to the mixer and play with it.