Can you post a photo?

Does she have a meditaranean Island taste? I would choose a paint color that wouldn’t make the cabinets speak t loudest especially if she want it to the focal point of the room. I would do maybe a muted paint color.

Brand and color name for the mustard paint?

That’s an unusual color choice for kitchen cabinets....very strong color...

I think creamy white unless she's going for a modern look in which case whitewhite could be better if it's the right white. Whatever way she goes, she'll need to do a big fat sample on the wall before committing. It'll be easy to get it wrong.

finally a kitchen that is not gray! post a pic or give the name of the color

Are you sure that’s mustard I thought the yellow would be a much deeper color but it looks beautiful.

Mustard is a warm color.

Creamy white is a warm color.

White white is a cool to frigid color. Mixing warm and cool colors almost never works.

The colors battle each other, and battling colors will hurt your eyes and upset your stomach.

Dijon?

French's yellow?

Brown?

Colonel?

Too many mustards. Tell us exactly which color.

She could do something other than a white, but if she sticks with white I’d do creamy. Below are some pics, the last one is with white white and it looks harsh to me.

The first pic is my fav. The last is the worst to me.

Monet’s kitchen is not mustard yellow and the whole space is done in blues along with the yellow. IMO we need to see the kitchen one mans mustard is anothers whatever.

Creamy

In Martha Stewar‘s kitchen I don’t think it’s a cream I think it’s a beige. That last kitchen with the yellow is more like a canary.

Or Ivory

A picture would help. One person’s mustard is another‘s yellow.

How are you all giving advice without any photos? It's meaningless because "mustard" could be anything, as has been pointed out a few times. I mean, just look at Dijon vs. ballpark mustard. 'nuff said.

I have a feeling the OP won't be back anyway.

or ochre or sienna, mustard ranges from ballpark to dijon... funny we were saying the same thing at the same time

love love soft buttery yellows, I find it uplifting without being retina burning/migraine inducing

Because when you search mustard kitchens you get all different shades of yellow and we do not know which shade of mustard op is referring to.

Although I think black is usually too potent to put in a Dwelling Place, some of those photos look like narrow or black trim here & there would offset the color strikingly.

yellow and black are a classic combo

I would say go with a creamy white it keeps it soft. I think white would be too strong of a contrast and make it a much harsher bolder look.

IMO we should all stop with answers until we get some pictures we are all just spitting in the wind.

Pure white is not a good blend with yellow unless it is a true yellow, and even then it can be a bit stark.

No matter what the mustard yellow looks like, any sort of off-white, cream, or ivory can be a pretty accent.

You can always get a custom blend, tinting a white with the mustard to make a shade that will complement nicely!

White white is a cool to frigid color. Mixing warm and cool colors almost never works.

Sorry but I disagree. In this case a very soft blue could look smashing with the right shade of mustard cabinets. Just depends on the shade.

And by your comment, then one should never mix complements. Blue with orange, red with green or purple with yellow. Sorry, I strongly disagree.

I was thinking the same thing, a watery blue or a very light olive/khaki could look very pretty with a deep yellow/gold.

You can also do a grey blue wall with the mustard yellow to tone down the color a bit with white carrera countertops

I am so disappointed that op hasn’t been back. I was so looking forward to seeing this kitchen.

Well, we can keep coming up with names for slight variants on shades of yellow. :-)

Meanwhile, I'd argue that mustard and black can work OK.

It's also nice with a dark blue

I think it will also help to know what they style of the kitchen in question is.

With hotdogs and onions at the ball park !

Often when an OP doesn’t bother picking a user name, s/he isn’t coming back. Add to that, s/he gave the sketchiest info in order not to spend more than 15 seconds writing it. Not returning.

Meanwhile, the topic of a mustard-yellow kitchen is a fun one. Here is an actual Provençal kitchen (not a wannabe or faux). Yes, the cabinets are rickety, and the hood situation, well, I don’t know what’s going on there, but the colors!

There was someone here like 2-3 years ago who did a beautiful yellow kitchen. She had a modest sized cape, yellow cabs, walnut and marble counters. Anyone remember that? It was really really gorgeous.

ok,,,since the OP doesn't care enough to come back w/pictures or to answer questions, let's just file this vague post where it belongs, shall we? (I mean seriously, she's asking us to choose between white or a creamy white. This isn't the decision of the century. Her daughter can get a sample of each and try them)

Ugh, my idea of 2-3 years is apparently 6.

Enjoy another yellow kitchen. And if OP is out there look into these colors

https://www.gardenweb.com/discussions/2496394/2littlefishies-yellow-kitchen-reveal-part-deux#n=143