Hex #d55b2b or rgb(213,91,43) in RGB space is the tint of orange red. It has hue angle of 16.94 degrees, value = 84 and saturation = 80. #d55b2b can be obtained by mixing 4 colors: 4 drops of yellow, 5 drops of red, 1 drop of magenta, 2 drops of blue.
Nearest safe hex - #cc6633. Below you can see the block with #d55b2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #d55b2b to the mixer and play with it.