Front bumper meets curb

Personally I wouldn't bother.
It's not like you have to worry about rust....
Take some abrasive cloth or sandpaper and smooth out the edge and 99.99999999999999999999-percent of the folks out there will never know the difference. 2-3 years and about a dozen ramp strikes and buggy dings and you'll not even notice yourself.

However (comma!)
There's this:
NEW! Toyota Sea Glass Pearl Touch-Up Paint 781 from Brandsport Auto Parts (#TOY-00258-00781)

 

One of a few more to occur during ownership. You can't see it from the drivers seat.

 

if you want to paint it, the dealer carries touch up.

 

That's the easiest place to run a stroke of touch up, on a bottom edge like that. Or yeah, do nothing: it's so low and unobtrusive.

 

That's why I need a front camera as well as a rear camera.

 

I wouldn't touch it. It's unnoticeable.

 

The Gen 4 Prius needs something like the Citroen DS Pallas that could raise itself up on its own suspension. It could even lift individual wheels in emergency to change a tyre on the roadside. Meh, Toyota would never do that!

 

Personally I wouldn't bother. By the time your car is a few years old, it'll have plenty of matching (and other) marks.

 

You can get matching paint at many auto parts stores. I got some at my local O'Reilly's. I had to touch up a bit of my paint in another area that went down to bare metal.

But I will agree with most others here. That front end is made of plastic and it's hard to see. I'd let it go.

 

cover what up ?

 

Be happy that Toyota designed the Prius with a ton of weird lines that hide scratches. It's barely noticeable unless someone bends down. I guess you might as well do the touch up paint because you'll buy it at some point anyway.

 

- live with it
or
- sand it down with a few different sandpaper grits and some touch up paint.

there is usually more of those to come....