This is the room in question the furniture will be replaced with a creamy white suite but the carpet will also go when the new furniture arrives

We have dulux chanson on ensuite walls paired with white cabinetry and trims. https://www.dulux.com.au/colour/chanson Aerobus= slightly darker or Miller mood = slightly lighter

Any poorly lit room is going to throw blue or purple. It's not the paint colour it's the light spectrum and the quality of the light that's making it into the room. Go outside and look at any area of the yard that's shaded. Our brains tell us that shadow is black, but if you really look at the colour, not what you know about the colour, most shadows are a shade of blue, because that's the light spectrum occuring there. Artists know this, if you look at how they paint shadows they are almost always using a shade of blue or purple to do so. So what can you do about it? It's not usually a good idea to paint a dark room that doesn't get much natural light white or near white. That only serves to highlight how dismal the natural light in the room is since what you are getting is a dose of the light spectrum in that area. I had a very dark room with such low levels of natural light (owing to overgrown trees directly outside) that you needed the light on during the day to see anything. I painted that room a very deep shade of blue. Far from looking cold and dark, it became a very cosy and delightful room. Work with the light you have, rather than trying to fake it. Dark rooms actually look best painted an intense shade. The lack of natural light ensures that the colour doesn't overpower and instead ends up looking inviting. You can paint poorly lit rooms shades that you could never get away with in brightly lit rooms. But since you've already painted it, what you can do is put some very intense furnishings in there. Use colour blocking to draw attention away from the wall colour. You have predominantly blue light in that room. Also a warm daylight lamp will help.

I would have it painted a white . Perhaps buy some sample pots in different whites and try on the wall to see which suits you .