askvity

How do RGB pixels make yellow?

Published in Color Theory 2 mins read

RGB pixels create yellow by combining red and green light at high intensities, while omitting blue light.

Here's a breakdown:

  • RGB Color Model: The RGB (Red, Green, Blue) color model is an additive color model in which red, green, and blue light are added together in various ways to reproduce a broad array of colors. This is the standard color model used for screens like TVs, computer monitors, and smartphone displays.

  • Additive Mixing: Unlike mixing paints (which is subtractive), RGB mixing involves adding light. When you add red and green light together, you perceive yellow.

  • Pixel Structure: Each pixel on an RGB display consists of three subpixels: one red, one green, and one blue.

  • Creating Yellow: To display yellow, the red and green subpixels are illuminated at or near their maximum intensity, while the blue subpixel remains off (or at a very low intensity).

  • RGB Values: The color yellow is typically represented in RGB format as (255, 255, 0). This means:

    • Red = 255 (maximum intensity)
    • Green = 255 (maximum intensity)
    • Blue = 0 (no intensity)

In essence, your eye perceives yellow when it receives a strong red and green light signal and a negligible blue light signal. This is achieved by the individual red and green subpixels emitting light on an RGB display.

Related Articles