Hex #550c1d or rgb(85,12,29) in RGB space is the tint of scarlet red. It has hue angle of 346.03 degrees, value = 33 and saturation = 86. #550c1d can be obtained by mixing 3 colors: 2 drops of red, 1 drop of blue, 3 drops of black.
Nearest safe hex - #660033. Below you can see the block with #550c1d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #550c1d to the mixer and play with it.