Hex #666211 or rgb(102,98,17) in RGB space is the tint of yellow. It has hue angle of 57.18 degrees, value = 40 and saturation = 83. #666211 can be obtained by mixing 3 colors: 4 drops of red, 1 drop of blue, 5 drops of green.
Nearest safe hex - #666600. Below you can see the block with #666211 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666211 to the mixer and play with it.