Floor lamps used to mean one sad arc lamp hunched over a college futon, and thank god that era is over. Now they come in shapes that actually hold their own in a room, colored glass, curved brass necks, drum shades big enough to throw real light. It's a better time to buy one than it's ever been, even if it's also easier to pick the wrong one and end up with something that reads like a dentist's waiting room with better marketing.
Think about where the light actually needs to land before you think about looks. A reading corner needs something tall and direct, next to a chair, not across the room pretending to help. A living room with no overhead light at all, which is most living rooms I've been in, needs one in the corner doing the job a ceiling fixture should've done, and a second smaller one balancing it so the room doesn't feel lit from one side like an interrogation. Bedrooms want something dimmer and warmer, nothing with a shade that throws light straight at the ceiling at 11pm. If you own exactly zero floor lamps right now, start with one tall arc or tripod style near your main seating, something with a wide enough base that it's not a dog and toddler casualty waiting to happen. My mother has one brass arc lamp in her beige living room and genuinely nothing else needs to change in that room because the lamp is doing all the work.
Color and finish matter more here than people admit, because a floor lamp sits at eye level all day, it's not hiding on a side table. Warm brass and aged bronze go with almost anything and age well instead of looking dated in two years. A colored glass base, amber, deep green, smoky blue, catches light in a way plain white never will, and it's the one bold thing I'd tell even my most committed beige client to try. White and black are safe but only if the shape is doing something interesting, otherwise you've bought a stick with a shade on it.
Here's where it gets practical. Pick it up before you buy it if you can. A well made lamp has real weight in the base, a solid metal neck, not a hollow tube that wobbles if you bump it with a vacuum. The shade should sit straight and the switch should feel like a switch, not a loose plastic toggle that falls off by month three. Cheap ones feel like they're made of the same stuff as a party decoration, and they usually act like it too.
If you're starting from nothing, go warm brass with a cream shade. It goes with whatever comes next.