Lower Antelope Canyon is a place that is a textbook example of color science. In particular, how the color temperature ("warm" reds vs "cold" blues) drops as you go from brightly illuminated surfaces to the shadows.
So let me share a little secret: You have to shoot raw and then adjust the white balance in post to get the red / blue split you want. For me, temperature of 3300 and zero tint or thereabouts worked best. It does mean that you've gone past daylight white balance, past fluorescent, and ended up next to tungsten. But with a result this good, who cares?