Looking for neutral post process settings

I am looking to establish what the neutral post process settings are.
We want to establish a base line which can then be adjusted reliably on calibrated monitors, to be applied to other devices.

Neutral is defined as what an unlit texture looks like in the world when all post processing is turned off. It can be verified with pixel inspector.

I can turn off everything like bloom, etc, but the tonemapper is really what throws it off. Any hints would be most appreciated!

Thanks!