Computer Concepts Practice Test 2026 – All-In-One Guide to Master Your Concepts!

Colors on display devices are created by emitting light. The additive color model uses red, green, and blue light as its primaries, mixing them at different intensities to reproduce a wide range of colors. When red, green, and blue are combined at full intensity, they produce white; turning them off yields black. This approach matches how screens generate color through light.

In contrast, the subtractive model is about pigments that absorb light, which is why it's used for printing with cyan, magenta, and yellow (and black). LAB is a perceptual color space used for measuring and describing colors, not a direct method for displaying them. So for display devices, the additive RGB model is the one that reproduces colors by mixing red, green, and blue light.