Hex #663355 or rgb(102,51,85) in RGB space is the tint of crimson. It has hue angle of 320.00 degrees, value = 40 and saturation = 50. #663355 can be obtained by mixing 3 colors: 1 drop of magenta, 1 drop of white, 3 drops of black.
Nearest safe hex - #663366. Below you can see the block with #663355 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #663355 to the mixer and play with it.