Qualitative palettes from ColorBrewer https://colorbrewer2.org. Qualitative (or categorical) palettes are usually used for plotting independent data categories which don't have any specific order. For example, the series that represents shipping methods or product types.The colors in these palettes are selected to be distinctive and clearly indicate difference between data series.

'Declaration
 
Public Class QualitativePalettes 

public class QualitativePalettes