This is another of my personal favourites! Dirty Indigo is a rich, layered teal-indigo with a hint of underlying caramel here and there. It pairs very well with Cielo.
For my Veneto Sweater by Olga Putano, I used Cielo as the MC and Dirty Indigo as the CC. To view my Ravelry project page and the sweater:
https://www.ravelry.com/projects/Misslamotte/veneto-sweater