When it comes to using colors in charts, try to keep it simple. A good rule of thumb is the 60-30-10 principle: use a primary color that dominates 60% of your project area, a secondary color that takes up 30% of the project to visualize important data, and a third, accent color that draws particular attention to 10% of your data.
To change the colors used in your chart:
❶ Click to select your chart, then expand the Color drop-down in the right sidebar.
❷ Click on each color box to choose the color for each data variable by using the color picker or entering a hex code.
Note: Switching to a different project theme in the right sidebar will switch all colors for all charts/objects in your project and provide a list of template-matching colors to choose from.
You can also enable the Use one color option to use a single color for all data entries.
To change colors used in chart's legend and axis, expand the Fonts tab in the right sidebar.
If your chart has multiple tabs, you can adjust their colors individually.
❶ Click to select your chart, then expand the Settings: Global menu at the top of the right sidebar.
❷ Select a sheet.
❸ Expand the Color dropdown and adjust the color. This will only change the colors for the data in the selected tab.
If you want to reset individual sheet colors and return to global settings, click the link at the bottom of the right sidebar when in individual (sheet) color mode: