Double-color pie chart color matching

Quick answer：

Double-color pie charts are used to represent data with two distinct colors. The first color typically fills the majority of the pie, while the second color fills a smaller section to indicate a separate category or a comparison. Color matching in pie charts should be done to ensure that the colors are distinguishable and convey the intended message effectively. It's important to consider color contrast and accessibility guidelines to make the chart understandable for all viewers.