Hex #621b5c or rgb(98,27,92) in RGB space is the tint of magenta. It has hue angle of 305.07 degrees, value = 38 and saturation = 72. #621b5c can be obtained by mixing 4 colors: 3 drops of red, 2 drops of magenta, 5 drops of blue, 3 drops of black.
Nearest safe hex - #663366. Below you can see the block with #621b5c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #621b5c to the mixer and play with it.