Hex #66522e or rgb(102,82,46) in RGB space is the tint of khaki. It has hue angle of 38.57 degrees, value = 40 and saturation = 55. #66522e can be obtained by mixing 4 colors: 4 drops of yellow, 2 drops of red, 4 drops of blue, 5 drops of black.
Nearest safe hex - #666633. Below you can see the block with #66522e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66522e to the mixer and play with it.