Hex #551239 or rgb(85,18,57) in RGB space is the tint of scarlet. It has hue angle of 325.07 degrees, value = 33 and saturation = 79. #551239 can be obtained by mixing 4 colors: 3 drops of red, 1 drop of magenta, 3 drops of blue, 5 drops of black.
Nearest safe hex - #660033. Below you can see the block with #551239 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #551239 to the mixer and play with it.