Briefle words · Data & charts
Color scale legend
Also called color bar
A small gradient bar with labeled end values that tells readers which color stands for which number in a heatmap or choropleth.
Say it to an AI
Heatmap of room utilization, rooms by weekday, with a sequential palette from pale to dark blue. Always include a color scale legend (color bar) with the metric name and 0% and 100% end labels, otherwise the shades cannot be read as values.
How an expert would brief the stronger version of “Room utilization heatmap”.
See it
Try it as a puzzle →Space-usage report in the admin console of a desk-and-room booking tool.
Why: B's 140px gradient strip from #EFF6FF to #1E3A8A with '0%' and '100%' at its ends is the only thing that turns the cell shades into percentages.
Related words
Room 5 · Color & emphasis
Learn “Color scale legend” in a five-minute lesson