Whats the best way to make sure your background audio and narration don't over whelm each other

Hello !
With adjusting a background sound track to fill dead air but still running narration
whats a good way to make sure they are in tolerance of each other so the narration isn't overwhelmed by a background soundtrack somewhere?
Thanks for any help!

First rule of audio mixing, always lower volumes first, avoid raising them as much as possible.

1- Adjust your voice levels to be around -6db on the meter.
2- Adjust the background noise clip so that it is audible at a level "realistic" to the environment the video is taking place in, but not overwhelming the voices.

There's no magic number or "fix it for me" button. You have to simply "add in" the background, lower its level bit by bit, until your ears tell you it sounds right.

It might also be helpful to lower certain frequencies in the background sound to "cut a hole" for the dialog. I found those tips very helpful: vashivisuals.com/5-eq-audio-for-video-tips-for-filmmakers/

Thanks I used both these suggestions but what I also found almost easier was to visually expand and look at the audio levels in the clips themselves...you can see ones that are way above or just off a little visually...then modify by ear and adjust...between all three techniques my background audio and narrative are uniform
throughout the 25 min project. Works well Thanks again!

Good ol' Audio.

The most neglected part of the post production process... especially in the Episodic TV world I have lived in LOL.

Golden rules for me:

1. Always have dialogue stand out.
2. That said, always have good atmospheric sound where practicable in the mix.
3. Never finalise your mix with headphones.
4. Purchase monitor speakers.
5. Play your final mix on the intended delivery medium - laptops and desktops for online clips... play your edit on a TV screen if it is intended for TV and listen to it.
6. Less is better as was mentioned earlier on this thread.
7. Learn how compressor/limiter works and when to use them.

Dean....