Hex #999c55 or rgb(153,156,85) in RGB space is the tint of yellow. It has hue angle of 62.54 degrees, value = 61 and saturation = 46. #999c55 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of red, 1 drop of blue, 1 drop of cyan.
Nearest safe hex - #999966. Below you can see the block with #999c55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #999c55 to the mixer and play with it.