Hex #663744 or rgb(102,55,68) in RGB space is the tint of scarlet red. It has hue angle of 343.40 degrees, value = 40 and saturation = 46. #663744 can be obtained by mixing 4 colors: 4 drops of red, 1 drop of blue, 2 drops of cyan, 3 drops of black.
Nearest safe hex - #663333. Below you can see the block with #663744 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #663744 to the mixer and play with it.