Hex #551256 or rgb(85,18,86) in RGB space is the tint of magenta. It has hue angle of 299.12 degrees, value = 34 and saturation = 79. #551256 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of magenta, 3 drops of blue, 5 drops of black.
Nearest safe hex - #660066. Below you can see the block with #551256 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #551256 to the mixer and play with it.