Package - ggsci
Novelty - Yes
Type - qualitative

ggsci - flattastic_flatui

Github

nanxstats/ggsci

CRAN

ggsci

Use with paletteer package:

library(paletteer)
paletteer_d("ggsci::flattastic_flatui")

Use raw:

c("#DA4453FF", "#E95546FF", "#F6BA59FF", "#8BC163FF", "#34BC9DFF", "#3BB0D6FF", "#4B8AD6FF", "#977BD5FF", "#D870A9FF", "#E6E9EDFF", "#AAB2BCFF", "#434A53FF")