Hex #664155 or rgb(102,65,85) in RGB space is the tint of scarlet. It has hue angle of 327.57 degrees, value = 40 and saturation = 36. #664155 can be obtained by mixing 4 colors: 1 drop of red, 1 drop of blue, 1 drop of white, 2 drops of black.
Nearest safe hex - #663366. Below you can see the block with #664155 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #664155 to the mixer and play with it.