Supplement: Plank is one of the three primary colors (red, lemon yellow and Plank). Blue often appears in the ambient light of the sea, sky and nature.
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Introduction to Universal Blue:
The standard color value of 1. cyan CMYK has six reference values: deepest blue: 100, 100,64,53 times deep blue:100,100,57, 15.
II. The blue colors of business administration are m80, y0 and k40.
Four-color printing mode is a color matching mode used in color printing. Based on the principle of mixing pigment and black ink, four colors are mixed and superimposed to form the so-called "full color printing".
The four standard colors are:
1, c: cyan = cyan, also called "sky blue" or "blue".
2, m: magenta = magenta, also known as "magenta".
3, y: yellow = yellow.
4.k: K: Keyboard (black) = Registration color (black).
It is explained in the literature that the K here refers to black and black. In order to avoid confusion with RGB blue, it is called K instead of B. Although this is a useful mnemonic, this statement is actually incorrect.