Gee, what a great house style. I agree with oskuee' suggestion to match the colour end sections (blue). Your colour scheme is really good, but obviously you want a change, so this begs the question 'what don't you like about the current colour scheme?' It's difficult to suggest another scheme without more information. Are you making any changes to your landscaping? Are you wanting more (or less) contrast between colours? Do you prefer the house be one colour? What style is your interior? The answers will help offer more suggestions.

I don't like the blue grey colour on the weatherboard and I am planning to replace with a new one and the windows changed as well. I like the windows to be long not half as it is now.

i don't have any immediate plans to change the landscaping but in future I do.

To be honest I don't have a stong preference on the the house to be one colour or not.

Hi Guys, Is there any colour that would would look better for the weatherboard and it would blend well with the wall and the current garage colour please ?

If you want to have house all one colour theme, change the blue to a much darker version of the current main colour then use a mid tone version or white for the trim. Agree you should add a pop of colour on the door but go for a bright ‘grass green’, that will tie in with the garden at a later date.

I have to agree it was the landscaping and the imbalance of the colours that I noticed. From your additional comment I am not sure how important it is to you, but if you don't get it right a different colour won't work any better than the existing one IMO, and if you are going to replace the windows probably do that first, the different proportions of cladding and glass will change the look too.

Btw how high is the railing? I know of people who had to change their railings due not being compliant with modern building codes. If you are having work done on the front you might as well find out about that at the same time and update if necessary.