What font is being used on this website? It's like a beautiful cross between ITC Avant Garde, and Helvetica. I love the way the lowercase L has a tail on it.
I suspect that the typeface of Côte&Ciel is proprietary and I do not think it is available elsewhere.
If I were running a fashion company eager to stand out, I think that ordering a custom font based on logo (especially in just one style, like here) would be a rather considerable option.
I think this is proprietary from https://www.swisstypefaces.com/imagine/