A proton is basically an ocean of quarks/gluons, short hand 2up/1down.
Dark matter hypothetically could be "quark stars"
https://en.wikipedia.org/wiki/Quark_star.
If dark matter is hypothetical quark stars, Our universe would then basically be an ocean of quarks /matter-galaxies being the gluons.
Our universe may then but a "proton" of a higher fractal universe(hypothetically:)).