黑·青·玄作为颜色的“黑”，在许多地方常被“青”与“玄”所替代。顺从沿袭了几千年的习惯，这种替代早已成了常识。但若细究起来“黑”、“青”、“玄”三种颜色是并不一样的。黑，作为“白”的对立的颜色，俗语形容得最为准确：“墨黑墨黑”或“漆黑漆黑”，其色如墨... Black, blue and white as the color “black” are often replaced by “green” and “mysterious” in many places. Submission has followed the habit of thousands of years, this alternative has become common sense. However, if we look closely at the “black”, “green” and “mysterious” three colors are not the same. Black, as the “white” of the opposite color, saying the most accurate description: “black ink black” or “dark black”, its color as ink ...