Talk:Ultramarine

History Section
This history is embarrassingly Eurocentric. Synthetic Ultramarine was invented as a faience in Egypt in 4,000 BC. At least mention should be made of this, as well as the synthetic ultramarine known in China. 14.139.173.163 (talk) 09:13, 31 August 2018 (UTC)

Applications
Ultramarine was a popular color used in postage stamps at one time. Not sure how to work that into the article. W. B. Wilson (talk) 05:25, 21 June 2014 (UTC)

Bacchus and Ariadne
I cannot stress enough that using an image that completely misrepresents the subject of the article (in this case the colour ultramarine) is worse than using no image at all.

There was a Sesame Street song, when my kids were little, that went "One of these things just doesn't belong here. One of these things is not the same!" Of the four images in the gallery, three represented the colour ultramarine correctly, and the fourth was glaringly different. The reason was either that the colour reproduction was poor, or the colour wasn't actually ultramarine at all. If a written source says that it is ultramarine then it up to the creator of the gallery to make sure that the colour reproduction doesn't misrepresent the subject of the article. The thing that was going to tellyou that it was horribly wrong was your own observation. I cannot stress enough that editors need to look critically at every image that they choose to illustrate their subject. Amandajm (talk) 06:11, 8 July 2014 (UTC)

Artist's shades
I split and moved a section to Ultramarine

It's not clear if these shades are actually "ultramarinee" as described in the rest of the article - ie a specific pigment. Specifically its not clear what the actual definition of "electric ultramarine blue" is - the reference, quote "The color displayed in the color box above matches the color called ultramarine in the 1930 book by Maerz and Paul " suggests that the content in the article is derivative, ie not encyclopedic. The "International Klein Blue (IKB)" is already noted elswhere in the text

As such I will remove that part to his talk page for now. Below


 * Electric

Electric ultramarine is the tone of ultramarine that is halfway between blue and violet on the RGB (HSV) color wheel, the expression of the HSV color space of the RGB color model.

The issue is that the info given is derived out of context from a book into a RGB value - I don't have access to the book so I can't add anymore. I don't think it actually is relavent to this article. Maybe another one on blue colors but I am not sure if it is encyclopedic. Prof.Haddock (talk) 16:05, 12 July 2014 (UTC)


 * I've added a new section Ultramarine which may need more info in it.Prof.Haddock (talk) 16:29, 12 July 2014 (UTC)

ultramarine in the classic sense is not electric ultramarine, which is much lighter and the hex code. it also doesnt match pantone ultramarine which is https://www.pantone.com/color-finder/17-4037-TPX if someone is here looking for the ultramarine color and use the previous hex code (3f00ff) then they will not get what they expect, I have updated it to use html ultramarine hex code, which is much closer to the classic sense. if electric ultramarine or the "halfway between violet and blue" ultramarine is to be used, I would recommend having it as its own section. 45.36.7.195 (talk) 19:30, 19 September 2021 (UTC)yggdrasil75

Jerzy's mess
The summary of my preceding edit on the accompanying article ended with the following:
 * ... that should earn colleagues' approval. However, I'm about to save both unsatisfactory versions, and hope to report on the talk page in section titled ''Jerzy's mess".

I am now about to go read what is almost surely unsatisfactory, and expect to replace what i messed up with content worthy of review and further improvement by colleagues. --Jerzy•t 06:02, 4 July 2018 (UTC)

Possible removal from list
An entry in List of colors: A–F contained a link to this page.

The entry is :


 * Electric ultramarine

I don't see any evidence that this color is discussed in this article and plan to delete it from the list per this discussion: Talk:List_of_colors

If someone decides that this color should have a section in this article and it is added, I would appreciate a ping.-- S Philbrick (Talk)  20:34, 19 August 2018 (UTC)

RAF Roundel Blue
There is no attribution or source for the latter part of the statement "During World War I, the RAF painted the outer roundels with a color made from Ultramarine Blue. This became BS 108(381C) Aircraft Blue. It was replaced in the 1960s by a new color made on Phthalocyanine Blue, BS110(381C) Roundel Blue. "

Updated as evidence that the colour used changed was found, but evidence of the reason (Change of pigment) would be welcome

Davef68 (talk) 15:22, 22 October 2018 (UTC)

Contradictory chromophore
The end of the intro claim the color is due t "S3-", however the "structure and classification" section mentions "The chromophore is proposed to be S− 4 or S4." That sounds contradictory 92.40.214.239 (talk) 22:40, 13 February 2023 (UTC)

In popular culture
I added a section "In popular culture" to discuss the less than co-incidental naming of the Ultramarines in Warhammer 40,000. Although there are some links to Warhammer-related media in the disambiguation page, none of them link to a general overview that teach the reader about Ultramarines or the fact that their armor is, in fact, blue.

The section was removed without comment and I cannot even find the edit, let alone a reason for it, in the version history. I want to restore it but I don't want to see it removed without discussion again. What would the section need to remain in the article? GrumpyEconomist2905 (talk) 07:40, 30 May 2024 (UTC)