Hi, the paint is Farrow & Ball Off Black No.57 It has weathered really well and still looks fresh after 9 years

Wow! Looks blue in the picture. We have been desperately searching for the right slate blue in our garden, and it's been a tedious process! Now ... where to find a store that actually can deliver F&B paint before summer ends! :)

If you are in the UK possibly try www.designerpaint.com which is the website linked to Brewers paint shops. I would say the colour is more grey than blue, I know F&B used to do a colour called Blue Black aswell but think it was discontinued

Black Blue no.95 is part of the Archive Range

Awesome! I am in the UK, so great news ... And I believe we used your picture as an inspiration to getting our garden done a few years back. We also went tropical ...