Folks, I need your help tracking down a Wikipedia article.

You know these four colours that are being used in UIs: red for danger, yellow for warning, green for success, and blue for info. I remember there was an article talking about exact RGB values for those colours that convey these meanings best. I think there was a connected research on that. This four-colour palette definitely had a distinct name.

Does anybody recognize this and could help me find the article?

@picamanic thank you! Your link led me to the article I was looking for:

Not much about the UI design here — I guess I have imagined that 😅

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