Years ago I started prefacing my answer with, Do you want my opinion, or do you want my approval, because I can give you either one. It usually gets a laugh, and most often the answer of, I want your approval. To which I respond, I think thats a great idea
But it can also work nicely in black for evening cocktail party type events
Semi-Formal Dress Code For Men: Black Tie Don't let the diminutive phrasing fool you semi-formal attire is still the strictest dress code most of us will wear in our lives

Togarashi Steak Salad Ingredients Seared Filet Mignon Recipe 1 lbs beef tenderloin cut into 3 1-inch-thick steaks salt and freshly ground black pepper 3 tbsp togarashi 2 tbsp unsalted butter 2 tbsp olive oil Kewpie Toasted-Sesame Dressing Recipe 1 tbsp karashi 3 tbsp Kewpie mayonnaise cup tamari cup seasoned rice vinegar 3 tbsp mirin 1 tsp toasted sesame oil 1 tsp granulated sugar 1 clove garlic coarsely chopped cup avocado oil salt and freshly ground black pepper Salad Recipe cup cooked soba noodles 3 cups shredded curly kale 1 cup thinly sliced bok choy avocado diced cup frozen edamame thawed and rinsed cup shredded carrots cup shredded red cabbage cup diced cucumber cup sliced scallions 2 tbsp sesame seeds black and white 2 tbsp minced nori 4 oz Seared Filet Mignon sliced cup Kewpie Dressing Instructions Seared Filet Mignon Season the meat generously with the salt and pepper (and the togarashi if using)

Crafted in a smooth, light-reflective stretch satin finish, the dress features a structured, curve-skimming bodice that flows into a floor-length mermaid-trumpet skirt
Swapping your Oxfords for a nice pair of loafers could work, as could trading your suit for a pair of charcoal trousers and a sports coat, so long as you err on the side of conservatism with the fabric and pattern