Hex #664f39 or rgb(102,79,57) in RGB space is the tint of orange. It has hue angle of 29.33 degrees, value = 40 and saturation = 44. #664f39 can be obtained by mixing 4 colors: 5 drops of red, 1 drop of magenta, 4 drops of blue, 5 drops of green.
Nearest safe hex - #666633. Below you can see the block with #664f39 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #664f39 to the mixer and play with it.