Rule 8: Limit the number of colours in your pie charts — AddTwo
Designing the Octoverse: A GitHub Data Visualization Case Study
Rule 8: Limit the number of colours in your pie charts — AddTwo
Can I suggest a new color scheme? Different shades of blue does not make a useful pie chart. : r/Myfitnesspal
Blue Gray Pie Chart Color Scheme » Blue »
Data Viz Color Palette Generator (for Charts & Dashboards)
The Do's And Don'ts of Infographic Color Selection - Venngage
How to make a pie chart in Excel
Pie Charts Style Guide for Dashboards