Color exported to media .mp4 incorrectly

[Wholeo]

The top capture shows how the pinks are muted and the green circle is too opaque. The bottom capture shows how the frame appears in Premiere Pro. I have the latest CC updates. The other photo shows the export output and source parameters. Usually this give good results.

[Wholeo]

The reds have a different problem. Denser and slightly darker in PP. Lighter on export .mp4.

[Peru Bob]

If you bring the exported file back into Premiere Pro, does it still look like that?

[Wholeo]

Yes the green opacity especially has a problem. In the attached file, the exported/imported file is on the left in the Source Monitor in PP. The original edit is on the right. See more detail and contrast in the original.

[Richard M Knight · Accepted solution]

Try turning off 'composite in linear colour' in the sequence settings menu.

[Wholeo]

That worked! I never knew about that setting. Thanks for the explicit solution. Now I must look into "linear color" as it is in my app 

[Wholeo]

I found a good tutorial here: https://www.youtube.com/watch?v=NyqM4TbyiI0 I have a lot to learn.