The goal of
spectralscale is to provide a set of palettes and corresponding continuous, discrete and binned colour and fill scales based on a consistent set of colours. These should cover different purposes like those typical for sequential, diverging, qualitative and paired palettes, and preferably be robust with respect to different types of colour vision deficiency.
This is obviously quite a challenge, and I’m not sure it is even feasible, but there are some excellent tools available to start from: The palettes are currently all based on ColorBrewer’s Spectral palette, as approximated by the recent, and excellent
You can install the latest version of
spectralscale with any of the following: