Agree with carrieandjimh, You will need to connect the two colors through prints on pillows, curtains, rug etc. Can you post a pic of the sofa and wall color so we can see what we're talking about here? Thx.

Wish i found this Q &A before. So many beautiful people advising and sharing here! I am Repainting Tropical Queenslander with dark red and orangy timber floors and this thread is so helpful. I painted Whisper white and it is throwing so much Green it makes me so sad I am going to repaint. I get loads of tropical sun in the north facing - with eastern morning sunlight. Was just about to go and buy Natural White just to cover it. Do you think it will be too dull/warm a colour. I do like a fresh feel and contrasting with vivid white decorative trims. The whisper white looks nice For a while in the morning while the morning sunlight throws read up onto it but then it returns to a green

I agree but my comment means that my opinion is that colour and the way to find out would be as you say in person at a paint store but I reiterate that I have a very trained eye for colour and can only go by the sample above the rest is up to the home owner.

As said by big reader...leave white or paint the same colour, without the brushed finish, on the other walls. You can not bring another colour in. There is enough colour already with the orange wood and the bed cover. Also, the curtains look too small to pull right across your window correctly. They should be waved not flat when closed.