Hex #998917 or rgb(153,137,23) in RGB space is the tint of yellow. It has hue angle of 52.62 degrees, value = 60 and saturation = 85. #998917 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of red, 2 drops of blue, 4 drops of green.
Nearest safe hex - #999900. Below you can see the block with #998917 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #998917 to the mixer and play with it.