Cyan is a color between green and blue in the visible spectrum, with a wavelength of approximately 470 nanometers, similar to the color of the sky. Among the older generation, blue and green are collectively referred to as cyan.
Green is a background color that is crisp but not ostentatious, smart but not smooth.
Whether "cyan" refers to "blue" or "green", text descriptions often cannot accurately express the effect seen by the naked eye. If a color makes you unable to tell whether it is blue or green, it is cyan, because cyan is the color between blue and green.
[Cyan] A kind of greenish blue, medium shade, highly saturated; specifically refers to one of the three complementary colors. The above is "cyan" in modern Chinese.
There is an ancient saying that "green is taken from blue, and green is from blue..." The saying comes from "Xunzi Encouraging Learning": "Qing is taken from blue and blue is from blue; ice is from water and is colder than water." "The green here refers to indigo, which is dark blue.
In addition, "cyan" in the dialects of some northern regions refers to black.
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