Sharp transitions between constant hues – perceived as jumps in the data
If it gives the wrong impression to data we know – what does it do to data we don't?
Use other indicators than color to convey meaning
Colors are easier to discern in larger areas
Where magnitude differences are not relevant.
Where the midpoint is important.
Colour schemes and templates by Paul Tol
The misuse of colour in science communication by F. Cramer et.al.