Blue

Imagine that for thousands of years, no civilization was able to give a precise name to the color blue. In the Homeric poems, the sea was “the color of wine,” and in Paleolithic cave paintings, blue does not appear: there were reds, ochres, and blacks, but not that hue we take for granted today. This absence is no coincidence. In fact, blue was the last color to gain a place in our perception and our language. Here’s the argument: Blue, which we now associate with calm, depth, and technology, is a recent and laborious invention of humanity—and it is precisely its rarity in nature and the difficulty of reproducing it that have made it the most sought-after, expensive, and symbolic color in history. We always think that colors are universal, but blue is not: for centuries, for many peoples, it did not even exist as a distinct word. We are used to taking it for granted that the sky and the sea are blue, but the way we see them has been literally reshaped by culture and science. Take lapis lazuli, for example: in the Middle Ages, it was worth more than gold, so precious that it was used only for the Virgin Mary’s robes in paintings. Artists had to grind the mineral to a powder and mix it with linseed oil – a process so costly that blue was the color of kings and saints. In Europe, the first plant-based blue pigment was woad; in Asia and Africa, indigo was used. However, both were difficult to fix onto fabrics, and their hue faded over time. Until the 1980s, Italians often said “bleu,” borrowing the French term. And the term “blu” originates from a chain of ancient languages: from the Provençal blau to the Frankish blāo, all the way to the Latin blavus. Blue is not just a matter of pigments: the human eye also perceives it differently. We have three types of cones in our retina, but only one (the S-type cone) actually responds to blue, making it harder to distinguish than red or green. Moreover, many animals don’t see it at all: spiders, for example, can only distinguish green and ultraviolet. Water and the sky appear blue to us for physical reasons: the molecules in the atmosphere scatter blue light more than other colors, and in the deep sea, red and yellow wavelengths are absorbed first, leaving blue as the dominant color. But beware: in digital codes, blue is a mathematical construct. In the RGB model, pure blue has the code (0; 0; 255) or #0000FF in hexadecimal. All you have to do is combine the right pixels on a screen to make it appear—something that would have been unthinkable just a hundred years ago. Another curious fact: more than half of the Western population names blue as their favorite color, but in ancient cultures, it was often overlooked or viewed with suspicion. In classical Greece, the term “cyanos” was associated with suffering, and for the Maya, blue and green were essentially the same thing. Some see it as a symbol of serenity and peace: it is no coincidence that blue is the color of the flags of the UN and the European Union. However, in Egypt, it was the opposite of red, the color of infinity and the skin of the god Amun. And in politics, blue represents conservative parties in many countries, but in the United States, it is the color of the Democrats. A personal anecdote: If you’ve ever bought a blue T-shirt in the summer, you may have noticed that it fades faster than a red one. It's a matter of chemistry: blue pigments are more unstable, and historically, this was a real obsession for dyers and artists. It's no coincidence that blue has also become a symbol of melancholy— in American music, “having the blues” means being sad. However, in color therapy, blue is considered the most relaxing color: it lowers blood pressure, slows the heart rate, and calms the nervous system. The perspective that is usually missing is this: blue is not just a color; it is a cultural achievement that has changed the way we see the world—and that continues to change with technology, from the pigments of medieval painters to the digital codes of the screens you use every day. Blue did not exist until humanity learned to see it, give it a name, and make it real in its own experience. If blue is the color of calm, it is only because it was once the color of the unknown. If, after reading this story, you think of blue in a different way, you can anchor that perspective on Lara Notes with I'm In – whether it's out of interest, experience, or a deeply held belief. And if you find yourself telling someone that blue was once more precious than gold, you can mark it with Shared Offline: that way, the conversation remains, like a shared memory between friends. This Note comes from Wikipedia and has saved you over twenty minutes of reading.