Does the chair found online match the room?

I’ve run into a bit of a problem: I’m currently renovating and have been looking online at two or three different sets of tables and chairs that are actually quite similar. I took a photo of my room on my computer, hoping to visually match the products to the space to see how they’d look, but the whole process is a hassle. I’m not even sure if the actual chairs will match the colors I see on screen! How do you guys handle this sort of thing?