Hex #661f6f or rgb(102,31,111) in RGB space is the tint of magenta. It has hue angle of 293.25 degrees, value = 44 and saturation = 72. #661f6f can be obtained by mixing 4 colors: 4 drops of magenta, 1 drop of blue, 1 drop of cyan, 4 drops of black.
Nearest safe hex - #663366. Below you can see the block with #661f6f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #661f6f to the mixer and play with it.