Hex #66622e or rgb(102,98,46) in RGB space is the tint of yellow. It has hue angle of 55.71 degrees, value = 40 and saturation = 55. #66622e can be obtained by mixing 4 colors: 5 drops of yellow, 1 drop of red, 4 drops of blue, 5 drops of black.
Nearest safe hex - #666633. Below you can see the block with #66622e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66622e to the mixer and play with it.