Hi Tim,
Do you have a solution as to how to get the intended color in an exported file? I kinda gave up on fixing the issue at the time I wrote this post, but 5 months later and I’m still experiencing the same problem.
I exported samples (MPEG2, h264, QT h264, QT ProRes and just an exported JPG from the program monitor) from Premiere and took screen shots of them open in QT player next to the corresponding preview. There is a clearly noticeable difference between the two images.
Exported Frame from Program Monitor:

h264:

QT h264:

QT ProRes:

MPEG 2:

I’ll be the first admit that I’m not an expert when it comes to codecs or exporting, so I won’t be surprised if there is a simple fix to this. I’m hoping there is!