palettes.md
In ggthemes: Extra Themes, Scales and Geoms for 'ggplot2'

ordered palette lengths are stable

Code
  sequential
Output
  Blue-Green Sequential            Blue Light          Orange Light 
                      7                     7                     7 
                   Blue                Orange                 Green 
                     20                    20                    20 
                    Red                Purple                 Brown 
                     20                    20                    20 
                   Gray             Gray Warm             Blue-Teal 
                     20                    20                    20 
            Orange-Gold            Green-Gold              Red-Gold 
                     20                    20                    20 
          Classic Green          Classic Gray          Classic Blue 
                      7                    13                     7 
            Classic Red        Classic Orange      Classic Area Red 
                      9                     7                    11 
     Classic Area Green    Classic Area Brown 
                     11                    11

Code
  diverging
Output
            Orange-Blue Diverging             Red-Green Diverging 
                                7                               7 
             Green-Blue Diverging              Red-Blue Diverging 
                                7                               7 
              Red-Black Diverging           Gold-Purple Diverging 
                                7                               7 
         Red-Green-Gold Diverging        Sunset-Sunrise Diverging 
                                7                               7 
      Orange-Blue-White Diverging       Red-Green-White Diverging 
                                7                               7 
       Green-Blue-White Diverging        Red-Blue-White Diverging 
                                7                               7 
        Red-Black-White Diverging     Orange-Blue Light Diverging 
                                7                               7 
            Temperature Diverging               Classic Red-Green 
                                7                              11 
                 Classic Red-Blue               Classic Red-Black 
                               11                              11 
           Classic Area Red-Green             Classic Orange-Blue 
                               21                              13 
               Classic Green-Blue         Classic Red-White-Green 
                               11                              11 
          Classic Red-White-Black       Classic Orange-White-Blue 
                               11                              11 
    Classic Red-White-Black Light Classic Orange-White-Blue Light 
                               10                              11 
    Classic Red-White-Green Light         Classic Red-Green Light 
                               11                              11