Hex #803840 or rgb(128,56,64) in RGB space is the tint of red. It has hue angle of 353.33 degrees, value = 50 and saturation = 56. #803840 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of red, 3 drops of blue, 1 drop of black.
Nearest safe hex - #993333. Below you can see the block with #803840 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #803840 to the mixer and play with it.