Hex #78155b or rgb(120,21,91) in RGB space is the tint of crimson. It has hue angle of 317.58 degrees, value = 47 and saturation = 83. #78155b can be obtained by mixing 4 colors: 4 drops of red, 4 drops of magenta, 5 drops of blue, 4 drops of black.
Nearest safe hex - #660066. Below you can see the block with #78155b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #78155b to the mixer and play with it.