Kaplan Nursing Entrance Practice Exam

Which color is not a primary color of light?

1. Green

2. Blue

3. Red

4. Yellow

The correct answer is: Yellow

In the context of light, the primary colors are red, green, and blue. These colors can be combined in various ways to produce a broad spectrum of colors. When mixing light rather than pigments, the primary colors work on an additive color model. Yellow, while a primary color in the subtractive color model (often used in painting and printing), does not function as a primary color of light. Instead, yellow can be created by combining red and green light together. This distinction is crucial in understanding how colors interact in different contexts like additive (light) versus subtractive (pigments). Therefore, identifying yellow as not being a primary color of light is accurate and reinforces the understanding of how color theory operates in various mediums.