The RGB Color texture outputs the color specified in the color parameters.
Figure 1: The RGB Color texture parameters in the Node Inspector
Figure 2: The RGB Color node connected to the DiffuseAmount of diffusion, or the reflection of light photons at different angles from an uneven or granular surface. Used for dull, non-reflecting materials or mesh emitters. input of a Glossy materialUsed for shiny materials such as plastics or metals. node.