Hex #a42731 or rgb(164,39,49) in RGB space is the tint of red. It has hue angle of 355.20 degrees, value = 64 and saturation = 76. #a42731 can be obtained by mixing 4 colors: 5 drops of red, 4 drops of magenta, 3 drops of green, 2 drops of black.
Nearest safe hex - #993333. Below you can see the block with #a42731 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #a42731 to the mixer and play with it.