Package - PrettyCols
Novelty - No
Type - sequential
PrettyCols - Blues
Use with paletteer package:
library(paletteer)
paletteer_d("PrettyCols::Blues")
Use raw:
c("#436F85FF", "#4C7D96FF", "#548BA7FF", "#6497B1FF", "#75A2BAFF", "#86AEC2FF", "#97B9CBFF")