Your trim color might not look good with a white vanity. But there are so many different shades of white, and I don't really know what your trim looks like. Do you know what the manufacturer and color are? Have you had an opportunity to look at a sample vanity door next to the trim? You really shouldn't be ordering anything until you know it's all going to work together. If the ship has already sailed and they look terrible next to each other, you can always paint the trim in the bath a different color than the rest of the house. But you might have been better off going with a natural wood vanity. Is your contractor dictating your color scheme? Which tile are you using?

Ship has sailed. My contractor is a bit of a push back. We aren’t having the best time. He painted the louver doors.the trim color and my vanity is a clean, bright white. My time is a neutral off white and my shower floor is a white mosaic.

It would all depend. The right warm white and the right champagne could look good together - or the two could really fight. Can you post some pictures of the white vanity door against the trim/door? What are the colors of your walls and your floors? They all need to work harmoniously. Before you approve the white vanity (and it is your approval rather than his/her decision) see what your other alternatives would be.

You can mix metals in the bath but with a careful hand. You might have better luck with a brushed gold to antique brass kind of look.

Helpful references: https://www.drivenbydecor.com/favorite-tips-mixing-metals-home/

https://www.ninahendrick.com/designing-with-mixed-metals/

I'd be concerned about the contrast, might make your cream look dingy.

do you have natural light or great lighting? any chance you can change the vanity to something less white? even a light natural woodtone for warmth?

What about flipping it so it still ties into house? Going with a cream color wall and a white moulding??? My whole house trim and kitchen cabinets are very similar to Benjamin Moore Halo. A creamy white with yellow tones. Very warm. Thinking about pairing this with Sherwin Williams Flour White and an accent color wall TBD.

I’d like to call back to my house for consistency and familiarity but don’t want to make this vanity look atrocious since it’s a white / white.

IMO paint the vanity IMO adark color to get away from ll the same . Post pics of the choices you have please . post them in a comment DO NOT start another post.