A semi-formal wedding as a guest Navy, charcoal, or mid-gray suit
Try contrasting colors , for a nice pop of color
Many edits group white party picks together so you can compare silhouette, fabric, and price range side by side
Context determines where on that spectrum you land: More formal smart casual (approaching business casual): Tailored blazer + dress trousers + dress shoes Silk blouse + tailored trousers + heels Clean-cut button-down + chinos + leather shoes Core smart casual: Blazer + dark jeans + clean white tee + loafers Fitted knit + tailored trousers + ankle boots Printed blouse + straight-leg jeans + heeled mules More relaxed smart casual: Neat polo shirt + chinos + white sneakers Simple wrap dress + flat sandals Dark jeans + quality sweater + smart trainers The rule of thumb: when in doubt, err toward the more formal end of smart casual
Here is also where I store a variety of random things such as rolled blankets, extra plain white burp cloths, extra hanging cloths dividers, and winter hats (we live in Florida, so he only has 2)