A computer monitor is formed by what three primary colors?

• A. Red, Blue, and Yellow
• B. Red, Green, and Blue
• C. Cyan, Magenta, Yellow
• D. White, Black, Gray

Answer: (B)

Monitors create color by emitting light, so they rely on the additive color model using red, green, and blue as the primaries. Each pixel can glow in these three colors at different intensities, and mixing them in various amounts builds the full spectrum you see on the screen. When all three are at full brightness, you perceive white, which illustrates why this model is additive. This approach is different from printing, which uses subtractive primaries (cyan, magenta, yellow) because printing relies on absorbing light rather than emitting it. So the three primary colors for computer displays are red, green, and blue.