If you must combine the two using a darker stain will help to hid the difference.

How is your progress? Any awesome advice or opinions?! @Oak&Broad would you say go with stain #3 - dark but not too gray?!

#2 from left.

What brand and stain colors are these? We have a similar problem.

I started my own thread and Kristin had responded over there ...

[https://www.houzz.com/discussions/red-oak-stairs-do-i-install-white-oak-floors-or-red-dsvw-vd~3697644?n=70[(https://www.houzz.com/discussions/red-oak-stairs-do-i-install-white-oak-floors-or-red-dsvw-vd~3697644?n=70)

The painter actually found a stain for the red oak that matched the tones in the white oak. Can barely notice a difference.

Elaine- what stain did your painter find?!?

what stain did the painter find that blended both red and white oak

I am dealing with the exact same issue, except we just gor new floors and was told by the flooring people they could match the stain on floors. Now I am being told for the first time that you can't match red and white oat. Ugh!

We had this situation at our house. Installed premium select white oak flooring throughout and the stairs were red oak. I didn’t want to replace the stairs with white oak. We did Bona Natural seal one coat with two coats of Matte HD traffic on the white oak. We did one coat of Bona weather oak stain on the red oak stairs along with two coats of Bona Traffic HD on the stairs. It’s not “perfect” but at first glance it looks fine. It’s only when you look closely you can see a tiny difference in that the stairs have a slight “pink” undertone. But it’s not glaring, you really need to look closely to tell that they’re different and most people don’t notice.