Invisible Blue: The Color That Ancient People Could Not See

The story of “blue being invisible in history” begins in 1858 when William Gladstone who was mystified as to why the color blue was never refered to in ancient Greek writing. Further explorations have revealed an absence of the mention of the color blue in writing from many other ancient cultures. It was as if the color did not exist.

How Many Colors Can Most Of Us Actually See?

Why There was No Word for Blue in Ancient Greece and How Homer and

Tau symbol, The Lesser key of Solomon, Attis, and Adonis Art egypte ancienne, Musée égyptien, Histoire égyptienne

Who knew that clouds would be the most difficult thing to color : r/Coloring

Is it true that the ancient Greeks could not see blue? - Quora

Invisible Blue - The Color that Ancient People could Not See

Dandara Temple Destinazioni di viaggio, Consigli di viaggio

Did blue exist in ancient Greece? - Quora

There's Evidence Humans Didn't Actually See Blue Until Modern

Is it true that the ancient Greeks could not see blue? - Quora

TIL, that the reason for having Green in Iranian flag is nothing by mistake. It was due to a lexical gap for the word Blue in 19th century Persian. : r/vexillology

Invisible Colors, The Artful Brain

Lectures Bureau WAKING UP (IRVIN D. YALOM)