This is not really a translation question – more of a designer vocabulary.
How do you call the set of visuals, logos, designs, colors, fonts… that make a whole design project?
In French we would call it “Charte Graphique”, and I’ve seen some translate it to “Graphic Charter” but I think this is just a google translate translation.
Is there a word to describe this?
I usually use Visual Identity, which in french is Identité visuelle, another word for Charte graphique.