Does low light mean no windows? If you have a north-facing window, you’ll find that many greys go lavender. I had that issue in my kitchen. Paint samples I put on the wall all turned a purplish tone. Finally found Valspar Silver Dust. It’s a very light grey, but just enough to contrast with white trim - and in a bathroom, with white fixtures. I don’t know the LVR, but you can probably find online by searching.

Thanks.

The same happened in my current bathroom. A slight amethyst undertone. But I didn't mind it.

HD color matched a piece of tile. BM and SW wouldn't even try.
We are using a different gray tile in our new house. I'm going to see if someone at HD will do the same but I have my doubts. It was a random worker who decided to try.

That's kind of a big range.

Very light gray and an LRV of 60 - 70 leaves a lot of room for interpretation because LRV doesn't directly indicate how light / dark a color looks. LRV is just a number that tells you how much light a color reflects.

Starting with where you want to be in terms of hue family could make it easier to you to your idea of 'very light gray'.

Of course online color can't be trusted because it's never accurate but this might help get you in the right ballpark (hue family).