Hex #2b2b2b or rgb(43,43,43) in RGB space is the tint of red. It has hue angle of 0.00 degrees, value = 17 and saturation = 0. #2b2b2b can be obtained by mixing 2 colors: 1 drop of white, 5 drops of black.
Nearest safe hex - #333333. Below you can see the block with #2b2b2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b2b2b to the mixer and play with it.