Hex #aa9f00 or rgb(170,159,0) in RGB space is the tint of yellow. It has hue angle of 56.12 degrees, value = 67 and saturation = 100. #aa9f00 can be obtained by mixing 3 colors: 5 drops of yellow, 3 drops of red, 4 drops of green.
Nearest safe hex - #999900. Below you can see the block with #aa9f00 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aa9f00 to the mixer and play with it.