Hex #a21a8c or rgb(162,26,140) in RGB space is the tint of crimson. It has hue angle of 309.71 degrees, value = 64 and saturation = 84. #a21a8c can be obtained by mixing 3 colors: 2 drops of red, 5 drops of magenta, 4 drops of blue.
Nearest safe hex - #993399. Below you can see the block with #a21a8c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #a21a8c to the mixer and play with it.