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  1. 绿色
    绿色颜色
    色标互补色
     
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    Wikipedia
    https://en.wikipedia.org/wiki/Green
    Green - Wikipedia
    网页颜色#008000
    RGB (r, g, b)(0, 128, 0)
    CMY (c, m, y)(100, 50, 100)
    CMYK (c, m, y, k)(100, 0, 100, 50)
    Etymology and linguistic definitions

    The word green comes from the Middle English and Old English word grene, which, like the German word grün, has the same root as the words grass and grow. It is from a Common Germanic *gronja-, which is also reflected in … 展开

    In science

    In optics, the perception of green is evoked by light having a spectrum dominated by energy with a wavelength of roughly 495–570 nm. The sensitivity of the dark-adapted human eye is greatest at about 507 nm, a blue-g… 展开

    In history and art

    Neolithic cave paintings do not have traces of green pigments, but neolithic peoples in northern Europe did make a green dye for clothing, made from the leaves of the birch tree. It was of very poor quality, more brown than gree… 展开

    Symbolism and associations

    Green can communicate safety to proceed, as in traffic lights. Green and red were standardized as the colors of international railroad signals in the 19th century. The first traffic light, using green and red gas lamps, was erected in 1… 展开

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