Hex #803711 or rgb(128,55,17) in RGB space is the tint of orange red. It has hue angle of 20.54 degrees, value = 50 and saturation = 87. #803711 can be obtained by mixing 4 colors: 2 drops of yellow, 3 drops of red, 1 drop of blue, 4 drops of black.
Nearest safe hex - #993300. Below you can see the block with #803711 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #803711 to the mixer and play with it.