Hex #b151a4 or rgb(177,81,164) in RGB space is the tint of crimson. It has hue angle of 308.13 degrees, value = 69 and saturation = 54. #b151a4 can be obtained by mixing 4 colors: 2 drops of red, 4 drops of magenta, 4 drops of blue, 3 drops of white.
Nearest safe hex - #996699. Below you can see the block with #b151a4 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #b151a4 to the mixer and play with it.