I'm not familiar with what's available in quartz, but really you could do any color with the white cabs and neutral wood floors.

Have you looked at granites? There are many gorgeous granites, and you may be able to find a remnant -- look at stoneyards that sell remnants, you might be surprised at how inexpensive a nice piece of stone can be. Mentioning in case you're going the quartz route because you think it's less expensive than stone -- stone may very well be much less expensive, you don't need much and like I said you may be able to find a snazzy remnant.

Again -- any color will work here, it just depends what you like and what you want. Get yourself to a good stoneyard and see what strikes you.

IMO laundry rooms are like powder rooms you can have abit of fun. Maybe a remnant of a really awesome granite instead of quartz.Maybe something like blue bahia fo a bit of fun