Hex #872b28 or rgb(135,43,40) in RGB space is the tint of red. It has hue angle of 1.89 degrees, value = 53 and saturation = 70. #872b28 can be obtained by mixing 4 colors: 5 drops of red, 4 drops of magenta, 4 drops of green, 4 drops of black.
Nearest safe hex - #993333. Below you can see the block with #872b28 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #872b28 to the mixer and play with it.