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

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?

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

Photos of Mind-Boggling Optical Illusions and How They Work

Does it mean anything if you see both images in an optical illusion? - Quora

Chromostereopsis - Wikipedia

Fun with Ambiguous Images - Art of Play

The Müller-Lyer Illusion Explained

Why you should always question your perceptions

Visual Illusion: Are you #TeamWhiteGold or #TeamBlueBlack? – KU College Stories

Mind-boggling optical illusion shows you a shade of blue you've NEVER seen before

This perplexing optical illusion proves we shouldn't believe our eyes

Is this BLUE or GREEN? There's a new optical illusion frustrating the web

The Physics of Light and Color - Human Vision and Color Perception

Optical Illusion: There is a tiger hidden in this…

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