Hex #aaac99 or rgb(170,172,153) in RGB space is the tint of yellow. It has hue angle of 66.32 degrees, value = 67 and saturation = 11. #aaac99 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of magenta, 5 drops of blue, 5 drops of white.
Nearest safe hex - #999999. Below you can see the block with #aaac99 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aaac99 to the mixer and play with it.