There is a difference between purple and blue. how do you know

1, color wavelength:

Blue: It is the shortest wavelength among the three primary colors of red, green and blue, ranging from 440 nm to 475 nm, belonging to short wavelength.

Purple: refers to the colors of red (6 10-760nm) and blue (450-485nm), which can be made by mixing red and blue pigments.

2.RGB value:

The RGB value of blue is (0,0,255).

The RGB value of purple is (128,0,128).

3.CMYK value:

The CMYK value of blue is (100, 100, 0,0).

The CMYK value of purple is (65, 100,18,0).

4, color symbols:

Blue: It is a symbol of eternity.

Purple: In China tradition, purple is a noble color. For example, the Forbidden City in Beijing is also called the Forbidden City, and there is also the so-called "purple gas coming from the east".

Baidu Encyclopedia-Blue (one color)

Baidu Encyclopedia-Purple (a color)