Hex #b43828 or rgb(180,56,40) in RGB space is the tint of red. It has hue angle of 6.86 degrees, value = 71 and saturation = 78. #b43828 can be obtained by mixing 4 colors: 4 drops of yellow, 4 drops of red, 4 drops of magenta, 5 drops of black.
Nearest safe hex - #cc3333. Below you can see the block with #b43828 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #b43828 to the mixer and play with it.