Hex #9f9d80 or rgb(159,157,128) in RGB space is the tint of yellow. It has hue angle of 56.13 degrees, value = 62 and saturation = 19. #9f9d80 can be obtained by mixing 3 colors: 1 drop of yellow, 4 drops of white, 3 drops of black.
Nearest safe hex - #999999. Below you can see the block with #9f9d80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #9f9d80 to the mixer and play with it.