Introduction and differences between RGB and CMYK color modes

Introduction and differences between RGB and CMYK color modes

RGB color mode is a color standard in the industry, which is obtained through the change of red (R), green (G), blue (B) three color channels and the superposition between them, RGB is the color that represents the red, green and blue three channels, this standard includes almost all the colors that human vision can perceive, and is one of the most widely used color systems.
CMYK printing four-color mode is a color mode used in color printing, using the principle of three primary colors of pigments, plus black ink, a total of four colors are mixed and superimposed to form the so-called "full-color printing". The four standard colors are: C: Cyan, also known as 'sky blue' or 'azure blue', M: Magenta magenta, also known as 'magenta', Y: Yellow yellow; K:Key Plate(blacK) Positioning Plate Color (Black)
Friends who have been in contact with design should often hear terms such as RGB and CMYK, but for many novice designers, they often don't know what is the difference and connection between RGB and CMYK, and even often ask questions such as RGB to CMYK, the difference between CMYK and RGB, CMYK or RGB for printing, and how to convert to RGB.
RGB color and CMYK color are two different color modes. The RGB color mode is the most basic color mode, so the RGB color mode is an important mode. As long as the image is displayed on the computer screen, it must be in RGB mode. Because the physical structure of the display is RGB. CMYK is also known as printing color mode, and as the name suggests, it is used for printing. It's very different from RGB: RGB mode is a glowing color mode that allows you to see what's on the screen in a dark room; CMYK is a color mode that relies on reflections, so how do we read the content of newspapers? It is the sunlight or light that hits the newspaper and reflects it into our eyes to see the content. It needs to be lit by an external light source, and if you are in a dark room you can't read the newspaper. As long as the image is displayed on the screen, it is represented in RGB mode. As long as the image is seen on the printed matter, it is represented by the CMYK mode.