I do a lot of color correction for our PBS television series and thanks to those in the know on the forum and with their help, I’ve satisfied PBS very well using
levels
color corrector
color corrector (secondary)
color curves
in that order.
After all that and on the master bus we add the broadcast color corrector to be sure everything is within limits.
Also use the vectorscope and waveform to see where the colors stand. Gotten so I adjust colors by looking at those as much as I do looking at the video event.