Hi, I notice you're in Wellington, but you have posted on the Australian site. Do you want pinkish white? Or do you want more pink?

I noticed that too after I had posted it!

At first we thought a light pink on the breeze block wall to make a feature of the texture in it but thought it might look odd with the blue/white on the other walls. Then I considered a white pink through the whole room but not sure if I should scrap the pick idea altogether

Pink is in fashion, greyed down, kind of dusty. It goes fine with blue. There's nothing wrong with a bit of colour on the walls, it doesn't break the bank and is easily changed.

I guess the safer bet would deb to stick with the blue and add rugs and throws like you say. as all the rooms in the house face the same direction with the same carpet we are going to end up with a very blue house!

Hmm, I'd aim for balance. The last time these colours were in fashion, in the very early 1990s, I had light pink, light blue , light green and black. In some rooms there was white instead of black. They all worked well together. There are lots of recent pastel rooms on Houzz photos.

Also florals are about to appear on the scene, in big digital murals and digital printing on cushions, on rugs, etc. it's a modern version, but still florals. Pink and the pastels work well with florals.

Which way does the room face? If it faces South, in the Southern Hemisphere, go for a warmer colour.