Package - jcolors
Novelty - Yes
Type - sequential

jcolors - pal12

Github

jaredhuling/jcolors

CRAN

Not on CRAN

Use with paletteer package:

library(paletteer)
paletteer_d("jcolors::pal12")

Use raw:

c("#202547FF", "#43444AFF", "#5F654AFF", "#7B8948FF", "#97B043FF", "#B2D736FF", "#CEFF1AFF", "#D8E01BFF", "#DFC11BFF", "#E2A11BFF", "#E37F1BFF", "#E1581AFF", "#DE1A1AFF")