Color: the rgb system

Self-tutoring about color: the tutor mentions some ideas about rgb.

The following is my understanding of rgb color:

rgb is additive, meaning that to get white, you add 100% red + 100% green + 100% blue. You can’t accomplish this with pigments, because they reflect light rather than contributing it. rgb assumes the r, g, and b portions are separate contributions of light to an observation point.

Typically, 100% means 255, so white can be written as rgb(255,255,255). Interesting colors emerge when you zero out one of the components. For instance,

1. rgb(0,255,255): no red
2. rgb(255,0,255): no green
3. rgb(255,255,0): no blue

Source:

nixsensor.com

science.howstuffworks.com