Hex #aaa600 or rgb(170,166,0) in RGB space is the tint of yellow. It has hue angle of 58.59 degrees, value = 67 and saturation = 100. #aaa600 can be obtained by mixing 3 colors: 4 drops of yellow, 2 drops of red, 3 drops of green.
Nearest safe hex - #999900. Below you can see the block with #aaa600 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aaa600 to the mixer and play with it.