Hex #66501a or rgb(102,80,26) in RGB space is the tint of khaki. It has hue angle of 42.63 degrees, value = 40 and saturation = 75. #66501a can be obtained by mixing 4 colors: 3 drops of red, 3 drops of green, 1 drop of white, 3 drops of black.
Nearest safe hex - #666633. Below you can see the block with #66501a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66501a to the mixer and play with it.