Hex #621b4f or rgb(98,27,79) in RGB space is the tint of crimson. It has hue angle of 316.06 degrees, value = 38 and saturation = 72. #621b4f can be obtained by mixing 4 colors: 4 drops of red, 1 drop of magenta, 5 drops of blue, 3 drops of black.
Nearest safe hex - #663366. Below you can see the block with #621b4f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #621b4f to the mixer and play with it.