Hex #aa2b2b or rgb(170,43,43) in RGB space is the tint of red. It has hue angle of 0.00 degrees, value = 67 and saturation = 75. #aa2b2b can be obtained by mixing 3 colors: 3 drops of red, 1 drop of white, 2 drops of black.
Nearest safe hex - #993333. Below you can see the block with #aa2b2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aa2b2b to the mixer and play with it.