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  • Tammy LaBiche-Henley thinks this is interesting:

When it comes to focusing the audience’s attention, red is used as the single attention-grabbing color (primary red tends to be too loud for me, so I often opt instead for a burnt-red shade as I did here). Everything else is grey. Numeric data labels were used—an additional visual cue signaling importance given the stark contrast of white on red and large text—on the points we want the audience to focus: the increasing percentage of projects missing goals. The rest of the data is preserved for context, but pushed to the background so it doesn’t compete for attention. Slightly different shades of grey were used so you can still focus on one or the other series of data at a time, but it doesn’t distrac...

From

Cover of Storytelling with Data: A Data Visualization Guide for Business Professionals

Note

Use burnt red instead of red to avoid being too loud or alarming