You could try yellows or blues. Maybe add a feature floral, chinoiserie or trellis style wallpaper. Add green with plants and maybe a sunburst mirror. Dulux and I think crown do a visulaiser app so you can upload a pic of your room and try various colours. It's a bit tricky to use to start with but you get the hang of it after a few minutes

I was in a similar situation with silvery wallpaper I ended up painting the walls very pale grey- just grey enough so that white photo frames etc. look nice on it. I have bright sunshine yellow with it to make it warmer- and thinking of adding bits of turquoise and magenta as well to make it a bit more cheery :)

White would look fab, especially if you have a wooden floor. I’ve got a very dark hall and stairs and I painted it Dulux Egyptian Cotton but it’s maybe a little dingy. A very pale grey would also work. Pick a grey you like then go a shade lighter as a dark hallway can make many greys look dingy too. Good luck.

Thankyou all for your responses. I am answering all the questions as follows: 1. The units colour is Porcelain (Howden's Elmbridge Kitchen Units). 2. The original wall colour is Dulux Ivory Lace. 3. The kitchen and utility room is East facing and the sun is in the rooms in the morning and switches to the front of the house in the afternoon. 4. As advised earlier, all of the grey variants we have tried are coming out in shades of lilac through to mauve/purple unless we go with a deep grey which is too dark for the room. 5. Any help on alternative colours which maintain the airy light feel of the rooms would be very much appreciated including creams etc. I look forward to your thoughts/suggestions.