Fleurs de Fuschia was issued maybe 10 or more years ago and it came in petrole. I finally acquired it this year from a reseller, believing it would look like a dark blue teal as I seem to recall when I initially tried it on years ago. At the time SA spontaneously noted it was a good look.
When I got it this spring, it did not resemble a teal but a slightly grayed dark blue. It matched the Eileen Fisher color called Fir which was available at the time I acquired the scarf. Fir was sort of a blue spruce color without any touch of green. I got a Fir top. But the scarf looks better with an aqua shirt that picks up the turquoise accents in the scarf.
I don't believe the color faded over the decade. I'm left wondering whether the dark blue-teal I'm seeking would be found in canard. Colvert seems to be a leather color, not fabric.
Pocketbook if you were able to photograph your petrol HS in good light it would be informative.