Everyone sees this optical illusion differently. Does the outline look red or blue to you?

What is the colour of the outline - blue or red?, Viral News, Times Now

Learning How to Un-See — Cliff Guren

i.natgeofe.com/n/bf6c6809-0af6-4bdb-ab31-8cf09cd74

This legs optical illusion is causing a new 'blue and black dress' style debate - what do you see? - Irish Mirror Online

Optical Illusion Suggests People See a Cat or Moose, But the Jury is Out

How many colours do YOU see? Strange optical illusion divides the internet

12 fascinating optical illusions show how color can trick the eye - The Washington Post

Chromostereopsis - Wikipedia

Why do People see Different things in Optical Illusions and Why do they see it Differently? By: Molly D and Joey - What's going on in Mr. Solarz' Class?

Optical Illusion: Square Changing Colour

The boxes aren't moving… : r/blackmagicfuckery

Photos of Mind-Boggling Optical Illusions and How They Work