Hex #663644 or rgb(102,54,68) in RGB space is the tint of scarlet red. It has hue angle of 342.50 degrees, value = 40 and saturation = 47. #663644 can be obtained by mixing 3 colors: 4 drops of magenta, 3 drops of green, 3 drops of black.
Nearest safe hex - #663333. Below you can see the block with #663644 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #663644 to the mixer and play with it.