Talk:Yellow

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Contents 1 Disambiguation 2 Symbolism 3 Mixture 4 Yellow reflectance 5 Yellow vs. Reddish-Green 6 Old Jeep? 7 New York taxis 8 British Rail 9 Yellow is Red + Green 10 Disambig again 11 Ecru 12 Rubber Duckies 13 Associations and expressions -> Sports 14 Shades of yellow ... brown, green, orange, pink ... colour comparison chart 15 Complementary color

[edit] Disambiguation

Yellow is also a song by coldplay. But there is no disambiguation page. 202.62.231.133 11:38, 31 December 2005 (UTC)

I just added a link at the top. Caleb 18:35, 12 March 2006 (UTC)

[edit] Symbolism

I know blue is symbol of liberalists, but yellow? Djadek 14:27, 10 Sep 2004 (UTC)

Certainly in the UK. — Johan the Ghost _seance 01:21, 2 May 2006 (UTC)

[edit] Mixture

According to the article

Yellow is the color of light whose wavelength is between 565 nm and 590 nm, or is a mixture of red and green light that appears to be the same color.

Red plus green is not the only mixture of light that will give you yellow. Orange plus lime should give you yellow too (a more vivid one at that). In fact there are an infinite number of possible spectral intensity distributions that'll give you yellow. It is true, of course that computers, TVs, etc. use red plus green to make yellow and this would be worth mentioning. The sentence needs rewording. - Jimp 1Jun05

[edit] Yellow reflectance

I removed the spectral reflectance of yellow pic for a few reasons. Firstly, what information does this plot really give the reader? Why is the Y axis not labelled? Why would something which appears yellow also reflect equally well in green and red portions of the spectrum (and some in the purple region, its complementary color!) this can't be "pure" yellow. This is just more confusion the reader doesn't need to deal with. --Deglr6328 09:33, 4 Jun 2005 (UTC)

For an object to appear yellow it MUST reflect strongly in the red and green portions of the spectrum. Apparently the information that was in this figure is sorely needed. Dicklyon 19:20, 5 April 2007 (UTC)

[edit] Yellow vs. Reddish-Green

Can anyone put into detail the answer to this question:

Why, even though yellow is not percieved by the human eye as a mixture of reddish green, does it have the behavior in RGB color theory as if it were such a color?? In the sequence R-O-Y-G-C-B-V, only R, Y, G, and B are percieved by the eye as primary colors. O is percieved as R+Y, C as G+B, and V as B+R. No color is percieved by the human eye as R+G or Y+B. Yet, in RGB color theory, R+G=Y. Georgia guy 23:11, 5 Jun 2005 (UTC)

• Red and green is most certainly perceived by the human eye as yellow. You are mixing addition of colors with the multiplication of colors. While most people are used to adding pigments to eachother in art class (pigments absorb light and so mixing is multiplicative) they are not used to combining light sources (like light or with monitor displays).

The true "sequence" is RYGCBV, orange is a shade of red that is popular in european cultures. Many languages and people do not think of as anything more than a shade of yellowish red. Asteron ノレツァ 20:23, Jun 7, 2005 (UTC)

Well, what are the multiplicative primary colors?? The additive are red/green/blue and the subtractive are cyan/magenta/yellow. Georgia guy 21:02, 7 Jun 2005 (UTC)

[edit] Old Jeep?

Yellow could be the color of an old jeep.

Is there a significance that old jeeps can be yellow (as oppossed to, say, a Volkswagen Beetle)? If so, I think it should be explained in the sentence.

[edit] New York taxis

What is the wavelength of the color of New York taxis? Nurg 10:30, 12 July 2005 (UTC)

Hi, In this article it states that the first cabs with color yellow are from Chicago, but in the article "taxicab" it says that Harry N. Allen imported the taxis from France to New York and painted the taxi yellow... So, which one is it??? I would like to know because in the spanish version of this article (yellow) says that this practice started in New York, and I would like to fix if it really was in Chicago. Thank you! Serpentus 03:49, 25 January 2007 (UTC)

[edit] British Rail

British rail uses a special yellow on the front of their high speed trains to make theme more visible in foggy weather. Does anyone know the colour code. NCS (since its a reflective colour)or similar. DrNumLock 14:27, 24 January 2007 (UTC)

[edit] Yellow is Red + Green

The Opponent process article says that there is no such color as reddish green, but this article says yellow is red + green. Anyone able to create an article that clarifies the difference between the color that the opponent process theory says there is no such color as and the color that yellow is in RGB?? Georgia guy 23:24, 11 April 2006 (UTC)

It's hard to understand what your confusion is here. Red plus green light makes yellow, not reddish-green. In the opponent theory, the red-green dimension is orthogonal to the blue-yellow dimension. Yellow is neutral in the red-green dimension; in this direction, red and green cancel, but you need red and green light to move up away from neutral along the blue-yellow axis. Dicklyon 04:54, 6 April 2007 (UTC)

[edit] Disambig again

This page is already a disambig page - do we need Yellow (disambiguation) at the top, when there's already lots of disambig stuff on here? --Dangherous 08:45, 14 April 2006 (UTC)

Just move the dis-ambiguation info into the dis-ambiguation page and leave the color-related info here. Georgia guy 20:18, 14 April 2006 (UTC)

[edit] Ecru

Since this page redirects from ecru, it really should explain somewhere what the heck "ecru" is. — Johan the Ghost _seance 01:21, 2 May 2006 (UTC)

Agreed. The old page for ecru shows a discussion that they just refer to Wiktionary and then wiped it by replacing with a redirect. This is useless editing based on near religious views of what Wikipedia is supposed to be as opposed to a place of useful knowledge. There is far too many cases already where trawling through history files are necessary to unearth information. --19:49, 2 May 2006 (UTC)

OK, I've at least found out what the word means:

the light cream or beige colour of unbleached linen (OED)

This doesn't sound like any useful definition of "yellow", so we have the problem that anyone who comes here looking for "ecru" is going to be dumped into an irrelevant page. My opinion, therefore, is that we should redirect "ecru" to beige, which at least sounds very close (the definition of ecru includes "beige"), so that one article could reasonably handle both. We can then fold the old content of ecru into beige. Sound good? Anyhow, I've done it! — Johan the Ghost _seance 20:14, 2 May 2006 (UTC)

Your editing is a vast improvement over the redirection to yellow. Nevertheless I still feel a dedicated page for ecru (as well as for each and every one of the other colour names) are more useful, especially as separate colour pages offer(ed) a colour sample so non-native English speakers can actually see what is meant by names such as ecru. The current drive to eradicate detailed colour articles is therefore damaging to readers of Wikipedia. I hope someone of seniority can counter that destruction. And thanks again for your work, --11:41, 3 May 2006 (UTC)

Thanks for the positive feedback! As for your point, I sympathise. The objectors would say that Wikipedia is not a dictionary, which is true, but as you point out each and every colour article could contain a colour swatch, RGV and HSV specifications, etc., which is way more than you would get in a dictionary. However, this is something that needs to be decided, standardised and implemented across the board by WikiProject Color, so I suggest you go and pitch in there. It semes a little defunct at the moment, unfortunately. Wikipedia:WikiProject has some tips for stirring up interest in a project. — Johan the Ghost _seance 12:36, 3 May 2006 (UTC)

You are welcome. I followed up on your proposal and made a not at the talk page for WikiProject Color. Hopefully the pages can be resurrected before it is too late and hopefully before the release of Wikipedia 1.0 whose project indeed found colour descriptions of interest. --14:51, 12 May 2006 (UTC)

[edit] Rubber Duckies

Is the best example of yellow "Rubber Duckies"? —The preceding unsigned comment was added by 82.47.15.195 (talk) 16:44, 5 January 2007 (UTC).

The beaks are orange too and the picture look somewhat orange from a distance. Quadzilla99 05:16, 16 February 2007 (UTC)

[edit] Associations and expressions -> Sports

The sentence "In cycle racing, the yellow jersey - or maillot jaune - is awarded to the leader in a stage race. The tradition was begun in the Tour de France where the sponsoring L'Auto newspaper (later L'Équipe) was printed on distinctive yellow newsprint." is not exact.

The "yellow jersey" is awarded to the leader of the overall classification in the Tour de France (and maybe others?), but not for all stage races (e.g. in "Giro di Italia" the leader's jersey is pink - actually for the same reason: the sponsoring newspaper "Gazzetta dello Sport" is printed on pink paper)

Martin.letis

[edit] Shades of yellow ... brown, green, orange, pink ... colour comparison chart

The shades of yellow colour comparison chart seems to contain a fair few colours which just don't seem yellow to me. It's full of browns, greens, pinks and oranges. I propose to remove these non-yellows. Note that the template {{shades of yellow}} has the same problem. Jimp 05:07, 5 April 2007 (UTC)

Who gets to decide where to draw the line? Dicklyon 05:55, 5 April 2007 (UTC)

Well, if it were up to me to decide where to draw the line ... lines, I'd just have done so but, instead, I've brought it up here so we can all draw them together. Jimp 08:43, 5 April 2007 (UTC)

Are there any sources for these charts (not just the colours, but the arrangement and classification)? If not, they are original research, and need to be removed from everywhere. Notinasnaid 09:12, 5 April 2007 (UTC)

Not really "lines" either: it'd be more of a two-dimensional surface in a three-dimensional colour space but the point, of course, is who gets to draw it? Like Notinasnaid says, unless we can back such classification up, for any of us to start drawing it anywhere would be to be getting into original research. I don't think it would be that great a loss if these charts were removed. Jimp 16:21, 5 April 2007 (UTC)

Probably this discussion should be taken to the template talk page: Template_talk:Shades_of_yellow. As to where I would draw the line, perhaps a clear boundary colors like green-yellow, which would appear on both the green and yellow charts. Lime is definitely over that line, having more green in it than green-yellow have. Similarly define some boundary on the orange side. Dicklyon 19:18, 5 April 2007 (UTC)

I'd say we need a brown boundary &, by the looks of it, a pink one too ... if we're to keep any of the chart at all. There is a similar discussion at Template_talk:Shades_of_yellow#Not yellow which I've also brought up at Wikipedia talk:WikiProject Color#What to include as a shade. Jimp 20:11, 5 April 2007 (UTC)

[edit] Complementary color

The colorimetric complement of yellow is the color to add to make the mixture white. But that depends on the exact yellow chosen, and on the exact whitepoint chosen. It can be blue or violet, or generally in the wavelength range that stimulates primarily the S cones. I'll try to find a good source, since just stating that the complement is blue is a bit misleading. Dicklyon 19:07, 5 April 2007 (UTC)

As for that, we should use the standard yellow, 255 255 0, not a slightly greener color. The complement of violet is chartreuse. Georgia guy 17:14, 6 April 2007 (UTC)

Your coordinates only have meaning in the context of a prescribed colorspace, but in any conventional RGB colorspace the complement of that yellow is necessarily the blue primary (which may be violet in color, potentially), since [255, 255, 255] is defined to be white. However, there's no need to constrain the broad colorimetric description to an artificially limited color triangele, so I completely disagree with your point. Dicklyon 22:09, 6 April 2007 (UTC)