Hex #665f2e or rgb(102,95,46) in RGB space is the tint of yellow. It has hue angle of 52.50 degrees, value = 40 and saturation = 55. #665f2e can be obtained by mixing 4 colors: 1 drop of yellow, 5 drops of red, 4 drops of blue, 5 drops of green.
Nearest safe hex - #666633. Below you can see the block with #665f2e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665f2e to the mixer and play with it.