Hex #d55b1d or rgb(213,91,29) in RGB space is the tint of orange red. It has hue angle of 20.22 degrees, value = 84 and saturation = 86. #d55b1d can be obtained by mixing 3 colors: 2 drops of yellow, 3 drops of red, 1 drop of blue.
Nearest safe hex - #cc6633. Below you can see the block with #d55b1d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #d55b1d to the mixer and play with it.