WHAT COLORS ARE THIS DRESS?

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About

#TheDress, also known as What màu sắc Is This Dress?, refers khổng lồ a Tumblr post in which viewers were asked to lớn identify the màu sắc of a dress, which appeared to be either white và gold or black & blue. The question sparked an Internet-wide debate in late February 2015, launching the competing hashtags "#WhiteAndGold" và "#BlackAndBlue."


Origin

On February 25th, 2015, Tumblr user swiked<1> posted a photograph of a dress asking the science side of Tumblr lớn help identify its colors, noting that her friends were torn between it being white và gold or black and blue. Within 48 hours, the post gained over 400,000 notes.

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On February 26th, BuzzFeed<2> posted a poll asking readers to decide what color the dress really was. Within 10 hours the poll received more than 1.8 million votes, with 72% selecting "white and gold" (shown below).

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Later that evening, BuzzFeed published a second post<7> revealing that the dress was actually blue after finding it available for purchase on United Kingdom-based online retailer Roman Originals,<8> which listed it as a "Royal-Blue Lace Detail Bodycon Dress" (shown below).

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On February 27th, Redditor AskScienceModerator submitted a post about the dress to lớn the /r/AskScience<15> subreddit, where experts from a variety of fields offered explanations of the color perception phenomenon. In the first 12 hours, it gained over 2700 votes (84% upvoted), 3,600 comments and reached the front page of the social news site. Meanwhile, Redditor Sooprman posted an image of the Black & Blue nguồn Rangers lớn /r/Funny<16> with the accompanying caption "The white Ranger / and Gold Ranger," garnering upwards of 3,000 votes (86% upvoted) in the first five hours (shown below).

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On the same day, XKCD webcomic author, Randall Munroe, used his Friday update to lớn illustrate the differences that background lighting effects had on the perception of the dress" color and included the following statement as the comic"s alt-text:

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“This white-balance illusion hit so hard because it felt like someone had been playing through the Monty Hall scenario and opened their chosen door, only to find there was unexpectedly disagreement over whether the thing they’d revealed was a goat or a car.”<21>

In the coming days, several news sites published articles about the dress debate, including Gawker,<3> Wired,<4> CNBC,<5> Business Insider,<6> Mashable<17> and Time.<18> Several celebrities also commented on the dress on Twitter including Taylor Swift,<9> Melissa Joan Hart,<10> Kim Kardashian,<11> Anna Kendrick,<12> Ellen DeGeneres<13> and many more.<14>

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Scientific Explanation

Many experts have cited the màu sắc constancy<19> feature of the human màu sắc perception system, which attempts to lớn make colors appear consistent under varying types of illumination, as being responsible for the different colors identified in the photograph.<4><20> If the viewer assumes a trắng illuminant, the dress appears blue và black, but if a xanh illuminant is assumed, the dress appears white và gold.