I just looked at pictures of Dulux Island Sea. It's a bold colour but I love that it's not your standard type of colour! I think it would look great with whisper white surrounding walls and white Windows, doors and skirtings.
If you want something a little less bold I have seen a softer version in the Dulux - Silent Shift range. There is a huge range of colours available similar to yours but they are lots more subtle and less risky.
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