Koichi loves pitch black garlic and he often eats it so much that his tongue bleeds.
Viet got such a deep tan on the beach in Hawaii that he looked like burnt toast.
OMG, I just came across the cutest pitch black dress.
The reality is that it's black. Like, so black that it's beyond fake black, it's reality black. This is so black it's pitch black.
The reading for the 真 is the vocab kun'yomi reading. Think of what is pitch black. It's your poor Ma (ま). She is so dark that she sucks in light, like a black hole... wait, she is a black hole, it explains why your Ma is pitch black.