Hi

This was 'Green Smoke' by Farrow and Ball

http://www.farrow-ball.com/green-smoke/colours/farrow-ball/fcp-product/100047

This image is a bit misleading and I would say that 'Inchyra Blue' is actually closer to the colour you see

http://www.farrow-ball.com/inchyra-blue/colours/farrow-ball/fcp-product/100289

I hope this helps.

merci pour la réponse rapide!