1, different primary colors

CMYK consists of four colors, cyan, magenta and yellow. And k is the last letter of black, and k is used to avoid confusion with blue.

RGB consists of three primary colors: R (red) red, G (green) green and B (blue) blue.

2. Different color patterns

CMYK, also known as printing color mode, is a color mode that relies on reflection and can only be seen when there is an external light source. Images seen in printed matter are represented by CMYK mode. For example, periodicals, magazines, newspapers, brochures, etc. All use CMYK mode.

RGB mode is a luminous color mode, and you can still see the contents on the screen in a dark room.

3. Different imaging effects

The images displayed on the screen are represented in RGB mode.

Images seen on printed matter are represented in CMYK mode.

References:

CMYK- Baidu encyclopedia

References:

RGB- Baidu encyclopedia