Which colors are considered to be analogous?

Analogous colors are those that are adjacent to each other on the color wheel. They create serene and comfortable designs because they share a common hue, allowing for seamless transitions and harmonious looks in any visual composition.

The correct choice of red, orange, and yellow exemplifies analogous colors, as these colors are side by side on the color wheel. This proximity allows them to blend well together, thus producing a pleasing aesthetic effect that is often used in artwork and design to create a cohesive color palette.

The other options consist of colors that are not next to one another on the color wheel, which disrupts the harmonious effect typical of analogous color schemes. For instance, the inclusion of colors that span broader areas of the wheel leads to varied contrasts and less visual cohesion, deviating from the intent of forming a soft, harmonious color combination.