Best colour settings without calibration tool?

Now that in the new update some of the colour settings have changed, would anyone be able to help with OSD settings for the best colour? I know that without an actual calibration tool, it won’t be as good, but I’d like to get the next-best thing if possible. Weird how the contrast is now 50-150 and the sharpness has changed to -5 to 5. There are also some new gamma settings. Maybe I just haven’t checked in in so long but I definitely remember sharpness and contract being 0-100.