Would you consider purple a warm blue or a cool red?

To me, It depends on the shade of purple

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.

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.
- 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.
- So what would be the color created by a wavelength of 550nm?
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
- Fun fact: blends of colours are also colours.

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

obviously it is D-flat C-sharp sucks.

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

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

Yes

It's anti-green

All colors have cold and warm variants and can work in surprising ways when used in color compositions.

I’m not trying to be a jerk here, but what’s an example of a warm blue? I can’t imagine it.

Depends on what shade of purple

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?

I’m colorblind and purple is often just blue without any qualifiers.

Purple is red; violet is blue.

Finally some important questions!

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

Is 0 nothing or the sum of all numbers?

Purple is a kind of red to me.

There are a lot of shades that people call purple

Lukewarm purple?

It depends on the definition of purple.

Cool red

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

Depends on the context.

Erm what?... That's a pretty bizarre question. Like asking if a fork is more of a spoon, or a butter knife. Purple is not a red or a blue, it's a mix of red and blue, not a discrete wavelength. Violet and indigo may look similar to it but, unlike purple, are discrete wavelengths.

If one has to answer the question, it depends on the red and blue used to make the purple.

I think you're missing the point somewhat.

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.

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

First one, then the other