Hex #664d89 or rgb(102,77,137) in RGB space is the tint of purple. It has hue angle of 265.00 degrees, value = 54 and saturation = 44. #664d89 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of magenta, 5 drops of blue, 1 drop of green.
Nearest safe hex - #666699. Below you can see the block with #664d89 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #664d89 to the mixer and play with it.