Hex #551039 or rgb(85,16,57) in RGB space is the tint of scarlet. It has hue angle of 324.35 degrees, value = 33 and saturation = 81. #551039 can be obtained by mixing 4 colors: 2 drops of red, 1 drop of magenta, 2 drops of blue, 4 drops of black.
Nearest safe hex - #660033. Below you can see the block with #551039 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #551039 to the mixer and play with it.