Hex #661567 or rgb(102,21,103) in RGB space is the tint of magenta. It has hue angle of 299.27 degrees, value = 40 and saturation = 80. #661567 can be obtained by mixing 4 colors: 1 drop of red, 3 drops of magenta, 3 drops of blue, 3 drops of black.
Nearest safe hex - #660066. Below you can see the block with #661567 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #661567 to the mixer and play with it.