Hex #891b5c or rgb(137,27,92) in RGB space is the tint of scarlet. It has hue angle of 324.55 degrees, value = 54 and saturation = 80. #891b5c can be obtained by mixing 4 colors: 5 drops of red, 2 drops of magenta, 5 drops of blue, 1 drop of black.
Nearest safe hex - #993366. Below you can see the block with #891b5c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #891b5c to the mixer and play with it.