Package - trekcolors
Novelty - Yes
Type - qualitative

trekcolors - red_alert

Github

leonawicz/trekcolors

CRAN

trekcolors

Use with paletteer package:

library(paletteer)
paletteer_d("trekcolors::red_alert")

Use raw:

c("#670000FF", "#990000FF", "#CD0000FF", "#FE0000FF", "#FF9190FF", "#4D4D4DFF")