Crameri (2018) offers carefully chosen schemes, ready for mapping data, with colors that are:
All the scales presented in Crameri (2021) are implemented here, for use with base R graphics, ggplot2 or ggraph.
Crameri, F. 2018. “Geodynamic Diagnostics, Scientific Visualisation and StagLab 3.0.” Geoscientific Model Development 11 (6): 2541-2562. DOI: 10.5194/gmd-11-2541-2018.
Crameri, F. 2021. Scientific Colour Maps (version 7.0.0). Zenodo. DOI: 10.5281/zenodo.4491293.