So I renovated my kitchen removing walls and combining my dining room. I extended the hardwood from the dining room into the kitchen. Installer told me I had red oak and installed red oak. Now that it’s installed and finished I can see a significant difference between the old and new floors. I don’t know if this is due to age as the old floors have been there 50 years covered with carpets etc. or because I had possibly white oak and he’s now installed red oak next to it. Not sure but I’d appreciate any input/advice on how to possibly minimize the noticeable difference.

https://ibb.co/4R7FjLh

New wood may have been harvested from better managed forests which have wider growth rings and a lighter color. The lighter color will eventually match. It can take over a year to become closer. More natural light from windows can help.
If the floor was stained the staining helps. A light brown color is classic.

Your older floor looks like white to me

I posted other pictures of the original floor in another area of the forum asking white or red. I really think it’s mixed because some pieces have the pinkish tones and others way brown/yellow and don’t match at all. When they built my house the builder must have just asked for a pile of the cheapest leftover oak flooring he could get and laid down whatever. I gotta live with it now.