Hex #d5591d or rgb(213,89,29) in RGB space is the tint of orange red. It has hue angle of 19.57 degrees, value = 84 and saturation = 86. #d5591d can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of red, 2 drops of magenta, 2 drops of green.
Nearest safe hex - #cc6633. Below you can see the block with #d5591d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #d5591d to the mixer and play with it.