Hex #8b381f or rgb(139,56,31) in RGB space is the tint of orange red. It has hue angle of 13.89 degrees, value = 55 and saturation = 78. #8b381f can be obtained by mixing 4 colors: 2 drops of yellow, 4 drops of red, 2 drops of blue, 3 drops of black.
Nearest safe hex - #993333. Below you can see the block with #8b381f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8b381f to the mixer and play with it.