Why are the blacks seen worse in exported videos?

[69v85y46pob6]

Not sure if it's a bug or a settings issue. When I edit the video, the playback has good colors and no issues, but when I export the colors look "Paler" and less "HDR" (if any of that is making sense).

Both sequence settings and export settings are set to the Rec.709 color scheme

[Richard M Knight]

How are you viewing the export? What does it look like if you view it using Premiere.

[69v85y46pob6]

I just imported it again and it looks the same as before the export. I tried playing it back in several players and I did notice that in the default Windows player and VLC, it all looks good. In other players (BSplayer and Quicktime) there was a color difference. I guess it has something to do with the format or compression, but is there a way to make sure? I don't want to export and upload multiple times for something I might have missed

[Richard M Knight]

You can only make it look good on your system. As you have found not all computers or players are the same.

[R Neil Haugen]

You didn't also post the all-important information as to what your color management is set to, which can influence this.

And ... are you on a Mac, perchance?

As noted by Richard, every screen out there is different. Colorists with more in their display and calibration gear than all video gear you probably own can't force two "identical" monitors to always be "identical" visually side by side. That's Reality, and a bane of the pro colorist.