Hex #663622 or rgb(102,54,34) in RGB space is the tint of orange red. It has hue angle of 17.65 degrees, value = 40 and saturation = 67. #663622 can be obtained by mixing 4 colors: 2 drops of red, 2 drops of magenta, 3 drops of green, 3 drops of black.
Nearest safe hex - #663333. Below you can see the block with #663622 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #663622 to the mixer and play with it.