Would a black dress shirt under a black suit with a black tie okay for business professional?

Or is it too much like a funeral?

No – It’s not appropriate. Substitute the black shirt for white, a color, a stripe & match your tie to the shirt AND to the suit. I’ve noticed a lot of news anchors on TV are wearing solid ties with solid shirts — not the same color but blending.

Red Dress (piano) @ No Black Tie KL