Which color is considered the least often occurring in a natural environment?

Royal blue is regarded as the least often occurring color in a natural environment due to the scarcity of naturally occurring objects in this hue. Most colors found in nature are derived from elements like foliage, soil, and water, which lean more towards greens, browns, and earth tones. Forest green reflects the abundance of vegetation, while earth brown captures the soil and many organic materials. Sunny yellow can be found in various flowers and other natural elements, making it relatively common. In contrast, royal blue does not frequently appear in natural landscapes, leading it to be deemed the least common among these options.