Hex #999d77 or rgb(153,157,119) in RGB space is the tint of yellow. It has hue angle of 66.32 degrees, value = 62 and saturation = 24. #999d77 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of blue, 4 drops of white, 3 drops of black.
Nearest safe hex - #999966. Below you can see the block with #999d77 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #999d77 to the mixer and play with it.