Here : https://esquisseparis.fr/catalogue/categories/couleurs/crayons-permanents-pablo-caran-d-ache
click on “Télécharger un nuancier”

Looking at the Pablo pigment list it’s fairly easy to see why some colours are rated ** only. Pigment Yellows, Oranges, Reds, Violets and Blues with one-digit numbers are old-fashioned if not downright obsolete – on the other hand it’s difficult to understand why ochres made of PY42 are ** instead of *** rated. Actually the Pablo (and Supracolor and Prismalo) ratings seem to be based on short-time artificial UV tests and they don’t tell everything about the real long-time lightfastness in normal household lighting.

It’s best to test everything yourself if you want to be absolutely sure. I won’t worry about pigments like yellow ochre PY42 or phthalo green PG7 but things like lemon yellow PY3 are more suspicious. One summer on a sunny window is more than enough to separate the really bad from the useful.

I’ve found this website useful – it deals with watercolours but the pigments are the same nevertheless.

Heikki

There are some very interesting documents on Manon Leclerc’s website. She is a Canadian artist. She does her own tests. The results (PDF) can be found here:
[url]https://manonleclerc.jimdo.com/telechargements/[/url]

Your link leads to a “page not found”; is this what you are referring to?

https://manonleclerc.jimdo.com/2012/03/16/r%C3%A9sistance-%C3%A0-la-lumi%C3%A8re-des-pablo-de-caran-d-ache-r%C3%A9sultats/

Interesting that some of the pencils that the manufacturer lists as **, she gives ***. Others shades that Caran d’Ache says are ***, she gives 0 stars.

I tend to agree with Leclerc. That’s very probably the long-term testing in natural light I was talking about. Hues like Salmon 071, Periwinkle blue 131 and Sky blue 141 have always been known as notoriously fugitive.

I remember testing my full 40 set of Prismalos (the best a youngster could afford) in the mid-1970s and I was quite disappointed – my test was not scientific at all but it quickly showed that oranges and pinks and violets and oddly enough some light blues can be very fugitive indeed. Do I remember right that Russet 065 quickly turned gray? Or was it later Staedtler Karat light brown 049? Or both?

Heikki