Hex #5b3b3d or rgb(91,59,61) in RGB space is the tint of red. It has hue angle of 356.25 degrees, value = 36 and saturation = 35. #5b3b3d can be obtained by mixing 4 colors: 2 drops of yellow, 3 drops of red, 5 drops of blue, 4 drops of black.
Nearest safe hex - #663333. Below you can see the block with #5b3b3d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b3b3d to the mixer and play with it.