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Souci de concordance colorimétrique à l'export

Community Beginner ,
Feb 09, 2023 Feb 09, 2023

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Bonjour,

 

J’ai un souci au niveau des couleurs et ai du mal à comprendre les profils colorimétriques en général.

J’ai un projet de logo bicolore et dont les codes HEX sont bien définis : il y a du blanc, donc #ffffff et de l’ocre #b2902d. Seulement, quand je fais “Exporter sous“, et que j’ouvre mon fichier png, la couleur ocre a changé et je ne comprends pas comment rectifier le tir. 

(Le mode colorimétrique de mon fichier .ai est en Couleurs RVB, le profil est, dans les “Espaces de travail“, côté RVB, en Adobe RGB (1998), côté CMJN, en Coated FOGRA39 (ISO 12647-2:2004), et en “Règles de la gestion des couleurs“, côté RVB, “Convertir en espace de travail“ et même chose côté CMJN. Quand j’ouvre mon fichier .ai, dans la fenêtre au sujet des profils, j’ai essayé en cochant “Préférer le profil incorporé (à l’espace de travail)“ et “Supprimer le profil incorporé (à l’espace de travail)“, mais rien n’y fait, le résultat reste le même.) Pourriez-vous m’aider s’il vous plaît ..?

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correct answers 1 Correct answer

Community Expert , Feb 09, 2023 Feb 09, 2023

Illustrator doesn't embed a profile in exported PNGs.

So what you need to do is open the PNG in Photoshop and embed a profile there. Don't "Convert to profile", just attach the correct profile (your Workking profile)

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Community Expert ,
Feb 09, 2023 Feb 09, 2023

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Illustrator doesn't embed a profile in exported PNGs.

So what you need to do is open the PNG in Photoshop and embed a profile there. Don't "Convert to profile", just attach the correct profile (your Workking profile)

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Community Beginner ,
Feb 09, 2023 Feb 09, 2023

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D'accord, ça fonctionne, merci beaucoup pour votre réponse.

Y'aurait-il un moyen d'exporter un plan de travail via Illustrator avec un arrière-plan transparent sans passer par le format png ? Merci d'avance.

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Community Expert ,
Feb 09, 2023 Feb 09, 2023

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You can export as PSD, which will also be transparent.

Of course a PDF as well as SVG are also transparent.

It completely depends on what you need it for.

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Community Expert ,
Feb 09, 2023 Feb 09, 2023

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As Monika said, Illustrator does not export or read profiles for PNG files.

But it does use the document profile when exporting (it just does not embed that profile).

So you may want to check the document color profile of the document you used for the export, it can be different than the one in your color settings. Use the document color profile to assign to your exported PNG.

The Document Color Profile can be found in Illustrator in Edit > Assign Profile and at the bottom of your document window:

Doc profile.png

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Community Beginner ,
Feb 09, 2023 Feb 09, 2023

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Merci pour votre réponse. Donc si j'ai bien compris, Illustrator n'exporte ni ne lit les profils des fichiers PNG mais il est possible de retrouver le profil sur un autre logiciel, (de la suite Adobe par exemple) ?

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Community Expert ,
Feb 09, 2023 Feb 09, 2023

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Yes, you understand correct.

It should not be a problem to find out what profile Illustrator is using for export. As shown above: The Document Color Profile can be found in Illustrator in Edit > Assign Profile and at the bottom of your document window.

Rember that profile and open the exported png in Photoshop and choose Edit > Assign Profile.

On a Mac you can also use Preview: Tools > Assign Profile...

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