Post B0OsM3cZui3HeB4pWa by bituur_esztreym@pouet.chapril.org
(DIR) More posts by bituur_esztreym@pouet.chapril.org
(DIR) Post #B0OltKiYffN4Y1nHzk by futurebird@sauropods.win
2025-11-19T09:02:40Z
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RGB codes use light mixing rules. This is fine, can take some getting used to if you are used to pigment. RYB would be a primary color code scheme. It wouldn't cover the same range of colors. I'm thinking about how one would code a conversion function between the two from "first principals" ... I think RYBB would allow the same range of colors if "B" is black.
(DIR) Post #B0OmqYLpcr1vutOzNA by petealexharris@mastodon.scot
2025-11-19T09:13:19Z
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@futurebird I think it'd miss some of the brighter colours. Red and Blue aren't really primary colours for paint, which is why printing uses CMYK
(DIR) Post #B0OnPjSIKf70UWCRkG by futurebird@sauropods.win
2025-11-19T09:19:39Z
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@retech That's for printing? And so it's also confusing. The color system most people learn is RYB for some reason. I don't know why.
(DIR) Post #B0OnR9AGEQyUW4RHqy by Asbestos@pnw.zone
2025-11-19T09:19:57Z
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@futurebirdpigments do some different stuff. I still have issues with the slider or the other ways you pick color on devices.
(DIR) Post #B0OnhBmwFCWxHsBD8q by futurebird@sauropods.win
2025-11-19T09:22:50Z
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@retech This is coming from working with students who learn about "primary colors" in art class, but then in tech I have this other system and it confuses them a little. (they adapt)
(DIR) Post #B0OnlTs6x6ikWwe68O by futurebird@sauropods.win
2025-11-19T09:23:40Z
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@petealexharris I'm trying to help students who learn RYB understand light mixing with less difficulty.
(DIR) Post #B0OoHH7VtjAuFU0jHk by futurebird@sauropods.win
2025-11-19T09:29:22Z
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@ben Makes sense. I think introducing CYMK to the mix would just make it more confusing? Also I want to puzzle this out. But I don't understand why so many people are taught that Red Yellow and Blue are the primary colors?That's the real issue. I will bother the art teachers tomorrow.
(DIR) Post #B0OrVp0L0tV5FuHZNA by mspcommentary@mastodon.online
2025-11-19T10:05:37Z
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@futurebird @retech I'm surprised that they find it confusing, because I would say that the colour mixing of light is closer to what we get taught with paint; it's only that the primaries are different. We aren't taught that mixing all the colours gives you something muddy and dark, although we all learn it soon enough. If you google for "colour wheel" you'll see lots of examples where the centre is white. That is completely misleading.
(DIR) Post #B0Orf7aPIQbLUZaVYu by futurebird@sauropods.win
2025-11-19T10:07:17Z
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@bri_seven This is blowing my mind. I thought it was ... I don't know I thought it was more grounded in abstract color theory. But this makes so much sense.
(DIR) Post #B0OsM3cZui3HeB4pWa by bituur_esztreym@pouet.chapril.org
2025-11-19T10:15:03Z
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@futurebird @retech i'd say the two essential differences are:- CMYK is the subtractive color mode, and the opposite of the additive color mode (RGB).- CMYK is for print, RGB is for numeric display (what Alvie R. Smith, co-inventor of the "alpha-channel" (transparency pixel) calls "digital light" instead of "virtual reality")some almost random link i found in quick search, but i find the second graph comparing them quite clear: https://graphicimage.net/rgb-cmyk-color-modes/
(DIR) Post #B0OsOxx1S5MGvi1hNg by futurebird@sauropods.win
2025-11-19T10:15:34Z
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@bri_seven I legit thought "primary colors" were like prime numbers but colors. That name is NOT helping.
(DIR) Post #B0OsTRpAKGFwjqULjM by Bumblefish@mastodon.scot
2025-11-19T10:15:37Z
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@bri_seven @futurebird Thank you so much for this infodump. My dad tried teaching this to me when I was 6-7 years old and when I didn’t get it (duh) he got frustrated and gave up on me. Naturally I’ve kind of avoided looking into the hows & whys of color, I just kinda fumble around doing the best I can with it. And it’s only reading this thread that made me realize my avoidance. Mind blown & again thank you so much!😊
(DIR) Post #B0OwLK9xL3ZKT0awt6 by futurebird@sauropods.win
2025-11-19T10:59:42Z
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@bri_seven @slowtiger "when two pigments mix,"Are we having "the talk" ?
(DIR) Post #B0Ox8H7lPe9vF5uYKm by datenwolf@chaos.social
2025-11-19T11:08:35Z
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@futurebird @bri_seven The somewhat incomplete and boring explanation is, that the visible color space is a 3-dimensional object, and you can represent color with any base and coordinate system of rank 3 mapping into that space.Some systems are linear (RGB, XYZ), others are cylindrical (HSL, HSV), some are curvilinear (L*a*b and LCbCr), and so.And some of these coordinate systems are operating on a dual space of that (like CMYK does).
(DIR) Post #B0P0w0pMZs0n2ZiErY by semitones@tiny.tilde.website
2025-11-19T11:49:28Z
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@bri_seven @futurebird yessss I want a class where I can mix pigments and get a brown mess, then look in a microscope and see colors again.
(DIR) Post #B0P7EUT7i5NduPVKO8 by llewelly@sauropods.win
2025-11-19T13:01:47Z
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careful, @futurebird . The galaxy of color spaces contains many strange new worlds and you may fall through the wormhole into the gamma quadrant and voyage for many years without finding a way home ...
(DIR) Post #B0PDwBrMrHdgf246ro by oblomov@sociale.network
2025-11-19T14:16:51Z
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@futurebird @ben the way I explain it is as additive versus subtractive composition. CMY combine by “subtracting more light from what is reflected from the (originally white) surface”; all of them together make black because you removed all components. RGB combine by “adding more light” from the darkness.
(DIR) Post #B0PLWyabrKpLthiNhA by llewelly@sauropods.win
2025-11-19T15:42:00Z
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@futurebird @bri_seven now I'm imagining seeing a primary color for every prime number. Maybe Geordi LaForge sees that way, but I don't think anyone else does.(There are some species of mantis shrimp which are thought to have up to 16 different color sensing pigments in their eyes, which might mean they see in 16 different primary colors, compared to the 4 primary colors that is typical for most arthropods and most non-mammalian vertebrates. )
(DIR) Post #B0PS3FGO08pobO1eZE by xinit@mastodon.coffee
2025-11-19T16:55:02Z
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@futurebirdEveryone knows red + green is yellow, but also that red + green gives an awful brownish mess as well, no?
(DIR) Post #B0PUjJrxSyakxSn2Zc by lffontenelle@mastodon.social
2025-11-19T17:25:01Z
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@futurebird Isn't RYBB more or less the same as CMYK?