Eliminate the "standard" sink base entirely and go with a 24" deep refrigerator cabinet and a couple of fillers. Build the toe kick and drill the holes needed for the drain and supply lines and then use the fillers to box in the sides above that.

I have the Kohler Whitehaven. I have the "short apron" style because I wanted to keep my original sink base and this is the only farmhouse sink other than the Kohler Vault "short apron" that can be fitted on a standard sink base. It is as deep as the "tall apron" style. My cabinets are oak. https://www.houzz.com/photos/my-pics-work-in-progress-phvw-vp~58830325 https://www.houzz.com/photos/my-pics-work-in-progress-phvw-vp~54994093 Here are other kitchens with stained cabinetry and white farmhouse sinks. I think it helps to have some other white element - countertop and / or backsplash.

Realistically, that’s probably not going to happen. You can go for a slight positive or negative reveal, but a perfect reveal is going to be pretty hard to get. Add in that a Fireclay sink isn’t exactly going to be perfect, either, and you’re chances of it are going down even more. If she’s adamant about not wanting any sort of ledge or area where dirt can get trapped, a solid surface counter with integrated sink is probably the only way to achieve it. Signed: someone who has installed IKEA cabinets and farmhouse sinks in two different kitchens, with quartz counters. ETA: Not that a zero reveal is impossible, but you’re going to be paying a pretty penny to find a fabricator who is willing to do it, and do it right. And that doesn’t exactly line up with IKEA-priced cabinets.

@demill66 we got the same 33" sink and will have it installed in a 36" cabinet too, we were told by several people including the cabinet maker, kitchen designer and our GC that is the way to go. I hope the cabinet company and/or person who cut the cabinet incorrectly cover the cost of a new cabinet. I hope you didn't pay in full either! I have a 30" sink installed in a 30" cabinet. Jospeh is correct.