Hex #664556 or rgb(102,69,86) in RGB space is the tint of scarlet. It has hue angle of 329.09 degrees, value = 40 and saturation = 32. #664556 can be obtained by mixing 4 colors: 2 drops of yellow, 2 drops of magenta, 3 drops of blue, 3 drops of black.
Nearest safe hex - #663366. Below you can see the block with #664556 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #664556 to the mixer and play with it.