Hex #b451a1 or rgb(180,81,161) in RGB space is the tint of crimson. It has hue angle of 311.52 degrees, value = 71 and saturation = 55. #b451a1 can be obtained by mixing 4 colors: 3 drops of red, 5 drops of magenta, 5 drops of blue, 4 drops of white.
Nearest safe hex - #cc6699. Below you can see the block with #b451a1 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #b451a1 to the mixer and play with it.