Hex #999f44 or rgb(153,159,68) in RGB space is the tint of yellow. It has hue angle of 63.96 degrees, value = 62 and saturation = 57. #999f44 can be obtained by mixing 4 colors: 5 drops of yellow, 1 drop of green, 4 drops of white, 5 drops of black.
Nearest safe hex - #999933. Below you can see the block with #999f44 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #999f44 to the mixer and play with it.