The Duality of XanThe dress colours inside the two rectangles are identical.
KoseiI love optical illusions.
Also, I don't know who drew this image. Sorry for not giving credit!
Our perception of colours and shades is heavily dependent on context. We may believe our eyes to be able to tell objective reality, but our brains are incredibly subjective in the way they convey that reality.
Like in this image, which is even more striking, squares A and B are identical shades of grey.
(credit: Edward H. Adelson/Pbroks13/WIkimedia Commons/CC-BY-SA 4.0)
My takeaway from this post is that, it turns out, seeing isn’t actually believing. Who knew?
Daniel Bohrer@XanIndigo my takeaway from this post is that color alone is meaningless to the human eye (brain?) without respecting its surroundings
@daniel_bohrer It’s more than just colour, too. A lot of human perception is based on context. Like in this image, the two orange circles are the same size but we perceive them as different because of their surroundings.
levampyreI think the reason might be that "perception" is a two lane road. We do not only take in sensory input, but we also unconsciously check it against our memories and experiences for interpretation. We check the sensory input against our predictions and prejudices to contextualize. Nobody sees the world objectively. We all have subjective perspectives. And our backgrounds, upbringing, social awareness, experiences, etc. play heavily into that. All. The. Time.
Tim Ward ⭐🇪🇺🔶 #FBPE@XanIndigo Some people who knew are the museum in Bradford, this week called "National Science and Media Museum", whose strap line last time I visited (1980s) when it was much more concentrated on photography, film and suchlike was "The Camera Always Lies".
Faye W. Love@XanIndigo It's a cool illusion, that's for sure (the board). If I squint hard enough, I can see they're the same colour.
Sindarina, Edge Case Detective@XanIndigo I did find a version with Japanese text, and what looks like a possible credit, but I am unable to read it.
@sindarina I think that’s the name in the bottom right. It looks like a pun but it’s a little tricky to explain – it loosely says “two are two” but with the first part also spelling the name Niko.
Japanese wordplay sounds so absurd when you try to describe it in English 😅
padeluun ⁂@XanIndigo @sindarina Der Text lautet:
»Blauschwarz an hellen Stellen Platin an dunklen Stellen
Sie haben beide die gleiche Farbe.
Lass uns mit einer Pipette nachsehen
Optische Täuschungen sind unheimlich!«
Und der Text unten rechts:
»Zwei kleine Mädchen«
(Übersetzt mit deepl)
Octavia Con Amore 
Succubard's Library@sindarina @XanIndigo this might be a bit late, but here's a translation:
"blue-black in a light environment" "white-gold in a dark environment"
"both have the same colours"
"try checking with the eye-dropper tool"
"optical illusions are scary"
artist: Nikoganiko (にこが2個)
David Dibben@sindarina @XanIndigo The original article that this appears in appears to be here:
https://nlab.itmedia.co.jp/cont/articles/3267162/
Which credits "Shippy" (しぴー) for the image and gives a page for the original:
https://www.pixiv.net/en/artworks/56179553
The girl in the illustration is apparently Nico Yazawa (I know almost nothing about Anime) so what appears in the bottom right is not the artist but "2 x Nico" - and as others have pointed out "nico" is both the girls name and also means two of something so it reads as "Nico ga niko", so a title for the image. にこが2個
Áʟᴠᴀʀᴏ
Kit Bashir@XanIndigo I literally did not believe you (even zooming in and looking at the two areas) until that second picture. My brain is now trying to side-eye itself.
das-g@XanIndigo The fine image-makers of Wikipedia used the same idea for illustrating the #TheDress illusion. 😃
image CC BY-SA 3.0 Jahobr; based on a work by Kasuga~jawiki, vectorized by Editor at Large; source https://commons.wikimedia.org/wiki/File:Wikipe-tan_wearing_The_Dress.svg
𝐊𝐢𝐧𝐠𝐮 
Look like some text was cropped. Maybe t
his might help find the original version...
Grandma Bates
Dusk :anim_teams_cat: 
toybox [fr]
SPICY EVIL CAET🍬🍭🎄
ideaPDish