this post was submitted on 19 Jul 2024
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Asklemmy

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[–] [email protected] 46 points 3 months ago

To me, It depends on the shade of purple

[–] [email protected] 33 points 3 months ago (2 children)

Yes.

Purple is not a single color. Maybe a spectrum analysis could answer this for a given instance of purple, but that's not my area of knowledge.

[–] [email protected] 26 points 3 months ago* (last edited 3 months ago) (3 children)

Specifically, purple is not a wavelength, unlike red(s) at ~700nm and blue(s) at ~400nm.

Purple is what human eyes see when the blue and red cones are both stimulated by their respective colours of light.

[–] [email protected] 11 points 3 months ago (1 children)

I like that some people are so confident in their incorrect understanding of something that they'll downvote the correct answer.

What you said is correct.

[–] [email protected] 5 points 3 months ago

Urgh, I go to sleep, wake up, read soooooo much awful wrongness.

Thanks for the vote of ~~confidence~~ fact.

[–] [email protected] 1 points 3 months ago (1 children)

So what would be the color created by a wavelength of 550nm?

[–] [email protected] 3 points 3 months ago (1 children)
[–] [email protected] 1 points 3 months ago (1 children)

Ohhh, I think I get it.

Purple is what you get when you force the visible light spectrum into a wheel, so there'll be something that "connects" blue with red?

If so, is the reason we perceive green as a different color than purple is because we have receptors for that specific wavelength, otherwise both colors would affect our red and blue color receptors similarly?

[–] [email protected] 3 points 3 months ago* (last edited 3 months ago) (1 children)

Essentially, yes. Although violet is a colour, and that does correspond to a wavelength of light. I'm not really sure where violet ends and purple begins.

Looks like this guy has had a crack at explaining the difference, though.

[–] [email protected] 1 points 3 months ago

Cool. Thanks

[–] [email protected] 1 points 3 months ago (3 children)

Nope. Purple is a wavelength that partially triggers both the red and blue cones.

The visual spectrum is continuous, not just three wavelengths corresponding to the three cones.

The blue cones and the red cones are stimulated by purple light. It’s a mix of blue and red signals from the retina, but the light is a single wavelength that is actually purple.

[–] [email protected] 12 points 3 months ago

No, purple is a non spectral colour meaning it is incorrect to call it "a wavelength" but rather you say it is a perception of multiple wavelengths. Not that this is special, pretty much everything you see is a non-spectral colour.

[–] [email protected] 10 points 3 months ago (1 children)
[–] [email protected] 2 points 3 months ago

This is the best in depth scientific explanation here, and deserves more upvotes. Thanks, was a nice read!

[–] [email protected] 3 points 3 months ago (1 children)

Purple is a green wavelength that doesn't trigger the green cones in your eyes.

It is made up by your brain.

[–] [email protected] 2 points 3 months ago
[–] [email protected] 12 points 3 months ago (1 children)

Right, indigo is a color (~425nm), violet is a color (~400nm), purple is typically a blend of colors.

See more: https://www.sciencelearn.org.nz/resources/47-colours-of-light

[–] [email protected] 8 points 3 months ago (1 children)

Fun fact: blends of colours are also colours.

[–] [email protected] 8 points 3 months ago (1 children)

Nu uh!

Okay, poor choice of words by me. Wavelength color vs what the eyes see.

[–] [email protected] 2 points 3 months ago

No worries, sorry for the snark. I find colour fascinating, like, when you dream of a purple dinosaur that's colour without any light at all.

[–] [email protected] 17 points 3 months ago (1 children)

"Would you consider the middle to be closer to one side, or the other?"

[–] [email protected] 2 points 3 months ago

obviously it is D-flat C-sharp sucks.

[–] [email protected] 15 points 3 months ago

That's kind of like saying if 1 is 0 + 1 or 2 - 1

[–] [email protected] 14 points 3 months ago (1 children)

Depends on the shade! There are warmer purples that are closer to red, and cooler purples that are closer to blue

[–] [email protected] 2 points 3 months ago (1 children)
[–] [email protected] 1 points 3 months ago

What, you don't create a new account with a username relevant for every comment?

[–] [email protected] 14 points 3 months ago
[–] [email protected] 9 points 3 months ago

Depends on the purple

[–] [email protected] 8 points 3 months ago (1 children)

Depends on what shade of purple

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[–] [email protected] 8 points 3 months ago

It depends on the purple.

[–] [email protected] 7 points 3 months ago (1 children)
[–] [email protected] 3 points 3 months ago

Anti yellow

[–] [email protected] 6 points 3 months ago

It's a different color, I consider it purple, my favorite part of the color spectrum. Purple can be made with both blue and red, but still is a completely different color. How would you consider water? Like liquid oxygen or wet hydrogen? Or just like water?

[–] [email protected] 4 points 3 months ago

Purple is a group of colours in between of blue and red, but unlike Indigo is leaning toward red (hot).

[–] [email protected] 3 points 3 months ago (2 children)

Is 0 nothing or the sum of all numbers?

[–] [email protected] 1 points 3 months ago

It doesn't even exist.

[–] [email protected] 3 points 3 months ago

Finally some important questions!

[–] [email protected] 2 points 3 months ago
[–] [email protected] 2 points 3 months ago (2 children)

Purple is a kind of red to me.

[–] [email protected] 2 points 3 months ago

There are a lot of shades that people call purple image

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[–] [email protected] 2 points 3 months ago

Lukewarm purple?

[–] [email protected] 2 points 3 months ago
[–] [email protected] 2 points 3 months ago

I consider it not a real color, just a sick joke our brains play on us. I also think it's an ugly color though, and hate that so many modern applications use it as a main color and don't allow retheming to something pleasant like blue or green.

[–] [email protected] 1 points 3 months ago

Depends on the context.

[–] [email protected] 1 points 3 months ago

Idfk, for me almost everything with visible blue in it is blue.

[–] [email protected] 1 points 3 months ago

I consider it a cool color because I can usually wear it and look good, and generally cannot look good in warm colors. But never thought of it as a red or a blue just purple.

[–] [email protected] 1 points 3 months ago (1 children)

It depends on the definition of purple.

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[–] [email protected] 1 points 3 months ago

First one, then the other

[–] [email protected] 1 points 3 months ago* (last edited 3 months ago)

Colors are very dependent on cultural context so if people would put their countries along with answers it'd be nice.

I personally think it's completely separate and not really comparable even though directly translated from Icelandic the color is "violet blue". From Iceland

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