How did you choose your floor color?

First, I would choose or eliminate the type, meaning tile yes or no, laminate/vinyl yes or no, etc. Then you should definitely visit a showroom (possibly also department stores, model homes, or similar) to see the general effect of color/pattern or light/dark on large surfaces. We went through all the floors but somehow realized that it should be something with wood. Only at the end did we eliminate the oiled wooden floor because the maintenance effort is obviously considerable on large surfaces. So that was a deal-breaker criterion and currently we have a great oak parquet from the company Meister in 2nd choice but top quality. I already wrote it here once, exactly that is what we will do again in the new house. I would definitely not rely only on pragmatic things because the floor is important, and for me it simply has to look great but also remain affordable.

I mean it the other way around as well. Choosing furniture according to the floor.

That's what I thought, from the way I got to know you here. My comment was more meant to emphasize that. Hence the thumbs up.

We mainly wanted parquet. Not too light, not too dark, rather timeless. Then a few were shown to us, and we simply took the one that could be sanded the most. Then the question of lacquered or oiled came up. On advice, we chose lacquered. That turned out to be a mistake. The installation company botched the job. We were at the studio for tiles. Good advice. They looked at the floor plans of the rooms, asked about wall colors and furnishings. The advice was good, even if it was a bit painful at times. Afterwards, 3D graphics of the rooms with the tiles were created.

Various providers offer the possibility to integrate your floor coverings into photos of the room. This then looks quite realistic and allows you to gather initial impressions.

Conclusion: Find a good exhibition, go there, have a look.

Look at it, touch it, and walk on it – don’t forget the haptics.
Smell it, because you don’t want to bring a stinker into the house.

Whereas I actually tend not to choose the floor based on the furniture. In my experience, furniture is more short-lived than a floor.

It depends on what you buy. A thin parquet wears out faster than a decent cabinet.

Choose furniture to match the floor.

No, you can coordinate that.

How did you handle that?

We put together a list of requirements for material and colors and based on that looked at floors and furniture. From the favorites, we got samples and compared them with each other in the respective stores. Especially with wood, it was important to us not to bring too many color nuances into the house. Parquet planks, dining table, and kitchen fit perfectly together although they are from different manufacturers. The time investment was worth it and was enjoyable for us.
By the way, I trust that the dining table has a longer fully functional lifespan than a person.

Of course, you are quite right about that. We also have furniture that could outlive us. Whether it does, because at some point we like something else, is another matter. We chose the floor to be as flexible as possible.