No, blue is what’s perceived as blue. There are problems with physical definitions because of an endless list of exceptions involving perceptual disorders, optical illusions, lighting conditions, etc. etc. etc. People worked on this problem, and there is no objective definition of color that I am aware of.
No, blue is what is collectively perceived as blue, while also not being collectively perceived as any other colour (or color if you are a “gray”).
That’s how they came up with the objective, standard, scientific definition of blue above.
And the sky isn’t pure blue, it’s a quarter of the way between blue and green.
It was blue because its color was within the set of colors that were commonly perceived as blue. It’s the color that is defined by human perception, not each individual instance of said color.
No, blue is what’s perceived as blue. There are problems with physical definitions because of an endless list of exceptions involving perceptual disorders, optical illusions, lighting conditions, etc. etc. etc. People worked on this problem, and there is no objective definition of color that I am aware of.
No, blue is what is collectively perceived as blue, while also not being collectively perceived as any other colour (or color if you are a “gray”). That’s how they came up with the objective, standard, scientific definition of blue above.
And the sky isn’t pure blue, it’s a quarter of the way between blue and green.
This is a charming phrase.
Was Neptune not blue in 1400 because nobody had perceived it yet?
It was blue because its color was within the set of colors that were commonly perceived as blue. It’s the color that is defined by human perception, not each individual instance of said color.