Hex #663c1a or rgb(102,60,26) in RGB space is the tint of orange. It has hue angle of 26.84 degrees, value = 40 and saturation = 75. #663c1a can be obtained by mixing 4 colors: 4 drops of red, 1 drop of cyan, 2 drops of green, 3 drops of black.
Nearest safe hex - #663333. Below you can see the block with #663c1a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #663c1a to the mixer and play with it.