Well cut jeans in dark blue, not black.
Slim cut shirt, one designed for casual wear and not a shirt that you’d wear with a suit. White is good if you can find a good shirt, blues and pinks are fine too. And tuck it in FFS, you’re not a ruffian.
Jacket if needed. Not a suit jacket, likely a thicker weave, maybe tweed if you fancy it, if not navy blue is good. Pocket square optional.
Brown shoes or boots, I like brogues but others work as well. What they are not is your office shoes, they’re also unlikely to be black.
Nice belt that matches your shoes.
Done. Not Top Gear style as your jeans won’t be baggy, your shirt will fit and you won’t be an insufferable fool.