RGB vs CMYK
If you don’t have a ton of time to read about the little things that make a difference, at least take a moment to know when to use each mode
What is RGB?
RGB is all about seeing the light.
Computer screens show color in images, text, and designs with different combinations of red, green, and blue light. This is where RGB comes from.
Therefore, anything designed for a screen – from smartwatches to a jumbotron – should be designed in RGB color mode.
Screens display images with hundreds of pixels. Each of those pixels has three sub-pixels: a red light, green light, and blue light. These sub-pixels light up in different intensities based on the color the pixel ultimately displays to produce a result on a black monitor.
Read more at https://learn.g2.com/rgb-vs-cmyk