Hex #661211 or rgb(102,18,17) in RGB space is the tint of red. It has hue angle of 0.71 degrees, value = 40 and saturation = 83. #661211 can be obtained by mixing 4 colors: 3 drops of red, 1 drop of magenta, 1 drop of green, 5 drops of black.
Nearest safe hex - #660000. Below you can see the block with #661211 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #661211 to the mixer and play with it.