Hex #89381a or rgb(137,56,26) in RGB space is the tint of orange red. It has hue angle of 16.22 degrees, value = 54 and saturation = 81. #89381a can be obtained by mixing 4 colors: 5 drops of red, 2 drops of magenta, 4 drops of green, 2 drops of black.
Nearest safe hex - #993333. Below you can see the block with #89381a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #89381a to the mixer and play with it.