Talk:RGB color model

Image of spotlights on wall

Old

New

I have rendered a new 3D image of three spotlights shining on a wall. Would the new version be preferable to the old? ➧datumizer  ☎  00:34, 29 May 2019 (UTC)

I think the old one looks better. I actually thought it was a photo, while yours looks more obviously faked. Dicklyon (talk) 03:35, 29 May 2019 (UTC)

One, from the all, finest colors - amber. (Pitch, then rosin.)

Why ? 176.59.210.175 (talk) 18:54, 5 July 2020 (UTC)

RGB color model mixture guide

The RGB color model is an additive color model and, therefore, is used on a  White surface in a dark area.

Primary colors

 Red

 Green

 Blue

Secondary colors/Mixing primary colors

 Cyan

 Magenta

 Yellow

Mixtures:

 Green +  Blue =  Cyan

 Blue +  Red =  Magenta

 Red +  Green =  Yellow

Tertiary colors

Cyan shades

 Spring

 Azure

Mixtures:

 Green +  Cyan =  Spring

 Blue +  Cyan =  Azure

Magenta shades

 Violet

 Rose

Mixtures:

 Blue +  Magenta =  Violet

 Red +  Magenta =  Rose

Yellow shades

 Orange

 Chartreuse

Mixtures:

 Red +  Yellow =  Orange

 Green +  Yellow =  Chartreuse

Mixing secondary colors

Mixtures:

 Magenta +  Yellow =  Light Red

 Yellow +  Cyan =  Light Green

 Cyan +  Magenta =  Light Blue

All hues mixed

 White

Mixtures:

 Red +  Green +  Blue =  White

Color mixture between hues

 Red - 1 red

 Orange-Red - 7 parts red and 1 part green

 Orange - 3 parts red and 1 part green

 Orange-Yellow - 5 parts red and 3 parts green

 Yellow - 1 part red and 1 part green

 Chartreuse-Yellow - 3 parts red and 5 parts green

 Chartreuse - 1 part red and 3 parts green

 Chartreuse-Green - 1 part red and 7 parts green

 Green - 1 part green

 Spring-Green - 7 parts green and 1 part blue

 Spring - 3 parts green and 1 part blue

 Spring-Cyan - 5 parts green and 3 parts blue

 Cyan - 1 part green and 1 part blue

 Azure-Cyan - 3 parts green and 5 parts blue

 Azure - 1 part green and 3 parts blue

 Azure-Blue - 1 part red and 7 parts blue

 Blue - 1 part blue

 Violet-Blue - 7 parts blue and 1 part red

 Violet - 3 parts blue and 1 part red

 Violet-Magenta - 5 parts blue and 3 parts red

 Magenta - 1 part blue and 1 part red

 Rose-Magenta - 3 parts blue and 5 parts red

 Rose - 1 part blue and 3 parts red

 Rose-Red - 1 part blue and 7 parts red

Mixing a primary color with its complementary color

 Very Light Red

 Very Light Green

 Very Light Blue

Red and Cyan

 Red +  Cyan =  Very Light Red

Needs:

2×  Red

1×  Green and 1×  Blue to make 2×  Cyan

A total of 4 parts (2×  Red and 2×  Cyan)

Demonstration:

1×  Red + 1×  Green + 1×  Blue = 3×  White

1×  Red (remaining) + 1×  White (from the created mixture) = 2×  Light Red

2×  Light Red + 2×  White (remaining from the created mixture) = 4×  Very Light Red

Green and Magenta

 Green +  Magenta =  Very Light Green

Needs:

2×  Green

1×  Blue and 1×  Red to make 2×  Magenta

A total of 4 parts (2×  Green and 2×  Magenta)

Demonstration:

1×  Green + 1×  Blue + 1×  Red = 3×  White

1×  Green (remaining) + 1×  White (from the created mixture) = 2×  Light Green

2×  Very Light Green + 2×  White (remaining from the created mixture) = 4×  Very Light Green

Blue and Yellow

 Blue +  Yellow =  Very Light Blue

Needs:

2×  Blue

1×  Red and 1×  Green to make 2×  Yellow

A total of 4 parts (2×  Blue and 2×  Yellow)

Demonstration:

1×  Blue + 1×  Red + 1×  Green = 3×  White

1×  Blue (remaining) + 1×  White (from the created mixture) = 2×  Light Blue

2×  Light Blue + 2×  White (remaining from the created mixture) = 4×  Very Light Blue

colour not color

as stated in https://en.wikipedia.org/wiki/Wikipedia:FAQ/Contributing#Should_I_use_American_English_or_British_English?, "The official policy is to use British spelling when writing about British topics, and American for topics relating to the United States." as can be found out with a quick google search, RGB was created in London, England. Therefore we use British English — Preceding unsigned comment added by Germany FranceUK Australia Russia Latvia (talk • contribs) 02:01, 8 November 2021 (UTC)

That is for topics closely associated with one country or the other (we would use British English in the article about the Queen's biography). This article does not meet that standard. For example, Isaac Newton is English, but the article on gravity uses American spelling. See the full guidelines on this at WP:ENGVAR, which supersedes that FAQ you linked. In particular, see MOS:RETAIN. There are no strong national ties here, so the spellings should be left as they are. - MrOllie (talk) 02:09, 8 November 2021 (UTC)

Sorry for the late response, but can you please explain why we should use the spelling of one specific country and not the standard version used by every other country. Or is it just you aren't aware that not everyone is american and revert useage of non-american spelling because you can't agknologe other cultures. 11:19, 10 November 2021 (UTC)Germany FranceUK Australia Russia Latvia (talk)

Wikipedia had a large amount of edit warring and argument about this earlier in its history, and the compromise that was reached (defined in MOS:RETAIN) is that whatever spelling style was used when the article was first written would be kept, barring some very limited exceptions. The Americans are getting RGB color model, the Brits are getting Aluminium, etc. - MrOllie (talk) 12:56, 10 November 2021 (UTC)

Well I don't entirely think that's fair i think the system is fair where some version of english get each thing but i think that brazil can get football australia can get colour new zealand can get labour america can get eraser etc. i think that is more fair that each country is represented as much as each other and not america gets 90% — Preceding unsigned comment added by Germany FranceUK Australia Russia Latvia (talk • contribs)

Wikipedia is not a nationalistic contest. The goal is making an encyclopedia, not proving whose spelling dialect is superior. Other projects have other criteria for deciding on spelling, but MOS:RETAIN was settled on here as the most effective for writing a global encyclopedia by a pseudonymous/anonymous crew of volunteers. If you have problems with it please start by reading MOS:RETAIN, MOS:ENGVAR, and MOS:SPELL. If you have further concerns please take them up at WT:MOS, not here. –jacobolus (t) 07:15, 11 November 2021 (UTC)

RGB vs HSI

I feel that the relation is not invertible. It is possible to state this (or say that is really invertible)? thanks 151.29.146.245 (talk) 01:18, 30 March 2025 (UTC)

Does HSL and HSV § HSI to RGB answer your question? Remsense ‥ 论 03:34, 30 March 2025 (UTC)

Good Easter. Excellent. May I suggest to add a link in the text? pietro spizzo 151.29.146.245 (talk) 14:00, 30 March 2025 (UTC) After a brief look at your page, I am not sure that Good Easter is the appropriate form. There are WIKI conventions on the point? Thanks again,