Which of the following is considered a triadic color scheme?

A triadic color scheme consists of three colors that are evenly spaced around the color wheel, creating a vibrant and harmonious combination. The choice of red, yellow, and blue fits this definition perfectly, as these colors are spaced evenly, forming a triangle on the color wheel.

Triadic schemes are particularly effective in design because they offer a balanced yet striking visual contrast. Each color complements the others while also maintaining its individuality, making them ideal for artwork, floral arrangements, and other design applications.

The other choices do not represent true triadic schemes because they do not maintain the same even spacing around the color wheel. For instance, red, green, and orange do not form a triangle as they are more aligned within a specific segment of the color wheel. Similarly, purple, yellow, and blue and blue, green, and purple do not achieve the same level of balance and harmony due to their proximity on the wheel, lacking that essential triadic distribution. Hence, the selection of red, yellow, and blue as a triadic color scheme is the accurate representation of this concept.