One of the hardest colors to make is not just blue—it's actually cerulean

The Devil Wears Prada made a cerulean sweater a moment in fashion history. But its scientific history is much older, and more ...
The Conversation

Colors are objective, according to two philosophers − even though the blue you see doesn’t match what I see

Is your green my green? Probably not. What appears as pure green to me will likely look a bit yellowish or blueish to you. This is because visual systems vary from person to person. Moreover, an ...