What does a color legend provide in Tableau dashboards?

A color legend in Tableau dashboards serves as a reference for understanding the meaning of colors used in visualizations. Each color represents a distinct value, category, or range within the dataset. By providing this visual cue, the color legend helps users quickly interpret and analyze the data presented, allowing for easier comparisons and insights based on color-coded elements.

For instance, in a sales dashboard where regions are represented by different colors, the color legend clearly indicates which color corresponds to each region. This function is essential for effective data storytelling and enhances the interactivity and usability of the dashboard.

The other choices do not align with the primary role of the color legend. While detailed breakdowns of data calculations and data filtering are important in Tableau, they are facilitated by different features and not through the color legend. Similarly, a list of available data sources pertains to data connections and integration rather than visual aids like legends.