Hex #710000 or rgb(113,0,0) in RGB space is the tint of red. It has hue angle of 0.00 degrees, value = 44 and saturation = 100. #710000 can be obtained by mixing 2 colors: 4 drops of red, 5 drops of black.
Nearest safe hex - #660000. Below you can see the block with #710000 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #710000 to the mixer and play with it.