薄暮现象，又称柏金赫现象（Purkinje effect），是色彩学的内容之一

说明如下： 在白色光源或高明度中，红色比蓝色明度强10倍，在低明度蓝色比红色明度强16倍。指在傍晚时，人的视觉由彩度优先转换成明暗现象。

The Purkinje effect (sometimes called the Purkinje shift, or dark adaptation and named after the Czech anatomist Jan Evangelista Purkyně) is the tendency for the peak luminance sensitivity of the human eye to shift toward the blue end of the color spectrum at low illumination levels.