Package - jcolors
Novelty - Yes
Type - qualitative

jcolors - rainbow

Github

jaredhuling/jcolors

CRAN

Not on CRAN

Use with paletteer package:

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

Use raw:

c("#D12600FF", "#DB6A00FF", "#B2FF2EFF", "#00AD00FF", "#9CCADEFF", "#005B94FF", "#1E2085FF", "#610052FF", "#953272FF")