Get chips for all of BM's top whites and look at them next to your tiles. It's difficult to impossible for people to choose the right white online. I will guess that Decorator's White will be a good fit, but you'll have to verify it for yourself. Once you think you have found the right one, get a Samplize (larger) sample, paint one wall or a sample board to verify your choice. Large amounts of a color frequently look different than the small chips. Sorry, there really is no easy way to do this.

You must do this in your own home by testing.

Buy a quart each of Decorator White, and Chantilly Lace. Roll the walls.don't even bother with Sampilize.

We can't advise a light, we aren't seeing the bath layout or even where the vanity will be located.

Go to the Maria Killam website. She has a "colorwheel" that will allow you to read the undertones without getting samples and chips and relying on your own interpretation. It also shows you the various kinds of whites.

She also has a pdf booklet that you can get for free "Whites are Complicated". And indeed they are. I got the colorwheel and booklets when we started renovating 15 months ago. I can't tell you how much that colorwheel has helped. I can't deal well with whites, but this has made it soooo much easier.

I've also found the Kylie M website to be enormously helpful this week as I am trying to decide between 4 different "off-whites" paints for my kitchen, now being installed.

Paint is still subjective on your site, to your lighting, any exposure to exterior and nature: )

Not sure what the Benjamin Moore equivalent is but I think that Sherwin Williams Drift of Mist would work really well in the space especially if you have it cut by 50%.

Here are some paint chips in different lighting:

@JAN MOYER Thank you for your input, I forgot to mention that the toilet and vanity would be on the left side of the room with the toilet next to shower. I will post the bathroom's previous layout which we will still be using. And I would place the vanity light horizontal over the medicine cabinet.

Consider: a white vanity to repeat the trim and toilet ...with a pale taupe wall paint to repeat the tile.

Just weighing in on the vanity light--you should definitely have one. You need good lighting there. My preference would be for a frosted shade, to avoid glare, but I think the simple lines of your fixture are great for your space.

@Andee Maria Killam's website is really helpful, thank you. Unfortunately the white is complicated e-book is no longer free. But she does have a ton of info, thank you!

@mcarroll16 The tiny bathroom already does have good lighting with 4 very bright can lights so bright that I'm asking for a dimmer switch put in. Attached is a photo of the lighting, taken at midnight. My husband said a vanity light is not necessary and would make the small space look cluttered, but I wonder if it will look like it's missing something because it doesn't look "complete" decor-wise.