Hex #998b00 or rgb(153,139,0) in RGB space is the tint of yellow. It has hue angle of 54.51 degrees, value = 60 and saturation = 100. #998b00 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of red, 5 drops of green, 1 drop of black.
Nearest safe hex - #999900. Below you can see the block with #998b00 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #998b00 to the mixer and play with it.