Hex #663a44 or rgb(102,58,68) in RGB space is the tint of scarlet red. It has hue angle of 346.36 degrees, value = 40 and saturation = 43. #663a44 can be obtained by mixing 4 colors: 2 drops of red, 1 drop of blue, 2 drops of white, 5 drops of black.
Nearest safe hex - #663333. Below you can see the block with #663a44 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #663a44 to the mixer and play with it.