Depending on the shades the blues and greys with a punch of red could work, but please think about not a bright blue but a gentler shade, blues can be very harsh if bright on a wall, and that can end up looking cheap. I'd like to see a white or ivory on the furniture and with a quilt in a print using blue, grey and some red. That would make sense of the red frames and pillows.

Yes

White furniture.

light Black

My little sister is redecorating her room

She wants to paint the walls a bright blue and grey

And use some red pillows and photo frames on the wall

Would these colour be nice together

What colour furniture should she go for?