OP, I used to work as a flooring designer so please understand you've chosen from a tiny sample and now you're seeing a huge expanse of the stuff, the colour has shifted a little.
Your sample is also next to paler carpet samples, and on a different colour floor, so your eye is being influenced by those, too.
Once your furniture and personal items are in, the same will happen. It will dominate less, in fact it will become a background to all the other items. At the moment, that floor is being a diva, the star of the show. Shove her back into the chorus and she'll simmer down.
That, of course, is dependent on what is being fitted actually being what you ordered.
I'd check first thing with the shop, ask why the names on the packaging don't match. Is it solid, or an engineered floor? Is it exactly what you ordered, if so? I've known engineered floors fitted when the customer has paid for solid oak. Verify that first.