Hex #803633 or rgb(128,54,51) in RGB space is the tint of red. It has hue angle of 2.34 degrees, value = 50 and saturation = 60. #803633 can be obtained by mixing 4 colors: 2 drops of red, 3 drops of magenta, 3 drops of green, 2 drops of black.
Nearest safe hex - #993333. Below you can see the block with #803633 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #803633 to the mixer and play with it.