Hex #663444 or rgb(102,52,68) in RGB space is the tint of scarlet red. It has hue angle of 340.80 degrees, value = 40 and saturation = 49. #663444 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of red, 4 drops of blue, 2 drops of black.
Nearest safe hex - #663333. Below you can see the block with #663444 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #663444 to the mixer and play with it.