Other than mustard yellow, what other colours go well with grey ?

[Lardlizard]

As ordering new sofas in grey, having mainly white walls
But want to add in a splash of colour

Ive got blues and white with grey. Looks really good.

All - they're neutral!

Everything!
But in a nod to the 80’s, I like grey with lemon yellow and also pale pink.

Mint Green. Red. Light pink. Black.
Burgundy. Fuchsia.

I wouldn't say all colours fit with grey for example. I wouldn't match lilac with grey. They're too clashy and similar. Brown and grey scream at each other, However.
As I always make a point of saying.
That's just my opinion not a fact.

I have two grey sofas in our family room with white walls. The cushions are bright and multicoloured patterns. Plain teal curtains.

We've got grey and blue in our living room. So grey sofa and chairs, navy-ish rug, some lovely pale blue ceramics etc. It's lovely and calming. I love mustard, but had grey and mustard for years and I'm a bit over it.

A soft sage green would work, or mint.
Dusky pink also.
Or a lavender/heather purple.

Grey is neutral.