Hex #aaa687 or rgb(170,166,135) in RGB space is the tint of yellow. It has hue angle of 53.14 degrees, value = 67 and saturation = 21. #aaa687 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of magenta, 4 drops of blue, 3 drops of white.
Nearest safe hex - #999999. Below you can see the block with #aaa687 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aaa687 to the mixer and play with it.