Hex #b33333 or rgb(179,51,51) in RGB space is the tint of red. It has hue angle of 0.00 degrees, value = 70 and saturation = 72. #b33333 can be obtained by mixing 3 colors: 5 drops of red, 2 drops of white, 3 drops of black.
Nearest safe hex - #cc3333. Below you can see the block with #b33333 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #b33333 to the mixer and play with it.