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Tag: Colour map

Figure accuracy and accessibility guideline

A template of guidelines to creating accurate, accessible, and inclusive science figures to be directed at authors of scientific publishers.

A template of guidelines for creating accurate, accessible, and inclusive science figures to be directed at authors of scientific journals and conference organisers. The guideline aims to reduce the widespread use and reuse of unscientific colour maps, such as rainbow-types like ‘jet‘ and instead promote science-proof alternative colour maps, such as ‘batlow‘. The template was first developed for the diamond open-access journal Tektonika and refined by its community.

  • PDF format
  • Colour-vision deficiency friendly
  • Readable in black&white
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Colour palette and gradient types

Classification of colour maps into palette types and gradient types.

Colour maps are classified into different palette types (continuous; discrete; categorical) and gradient types (sequential; diverging; multi-sequential; cyclic). Only sequential colour-gradient types can be faithfully applied to categorical types of data in form of categorical colour palettes. Scientific colour maps of all types are available from www.fabiocrameri.ch/colourmaps. A guideline on when to use which type is given on s-ink.org/colour-map-guideline.

  • Vector format
  • Dark version
  • Colour-vision deficiency friendly
  • Readable in black&white
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Mars terraforming

Terraforming Mars visually using scientific colormaps of Crameri (2018).

Theoretical terraforming Mars using the Scientific colormap ‘oleron‘ of Crameri (2018) highlighting the planet’s surface dichotomy. The animation shows the digital elevation model (available from https://astrogeology.usgs.gov) based on Mars Orbiter Laser Altimeter data (MOLA; Smith et al. 1999) obtained on NASA’s Mars Global Surveyor (MGS) spacecraft (Albee et al. 2001).

  • High-res GIF and video formats
  • Light and dark background versions
  • Perceptually uniform colour map (but unequal representation below and above zero level)
  • Colour-vision deficiency friendly
  • Readable in black&white
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Colour map guideline

Guideline for choosing the right scientific colour map for any given dataset.

Guideline for choosing the right scientific colour map for any given dataset. For effective data representation, the nature of a given data set has to be matched by a suitable colour map gradient- and palette type, and colour combination; the flow chart provides clear instruction for when to choose which one of them. See all available colour map types on https://s-ink.org/colour-palette-and-gradient-types. All different types of scientific colour maps are available from www.fabiocrameri.ch/colourmaps.

* Please not that the original version published in Nature Communications has a typo suggesting falsely to use dark colours for central values of diverging colour gradients, which has been corrected here (thanks to Lars-Henrik Snow).

  • Vector format
  • Colour-vision deficiency friendly
  • Readable in black&white
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Scientific colour map poster

A poster to be put in coffee, printer, and similar rooms at work acting as a gentle reminder for a professional use of colour in science communication.

A poster to remind for a professional, fair, and inclusive use of colour in science communication to display in coffee, printer, and similar rooms at work. Examples shown are for the unscientific rainbow colour map, ‘jet‘, and the scientific colour map ‘batlow‘ and features a photograph by Henry Manuel of Marie Skłodowska-Curie.

  • Printable pdf format
  • Colour-vision deficiency friendly
  • Readable in black&white
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High-contrast version

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Scientific colour maps

Scientific color map suite of perceptually uniform and color-blind friendly color gradients.

Overview of complete set of Scientific colour maps containing exclusively perceptually-uniform and colour-vision deficiency (and colour-blind) friendly colour palettes by Fabio Crameri. The package includes all different gradient- and palette types, which are explained on s-ink.org/colour-palette-and-gradient-types. A user guide on when to use which colour map type and colour combination is available from s-ink.org/colour-map-guideline.

  • Creator: Fabio Crameri
  • Original version: 20.09.2021
  • This version: 14.06.2023
  • License: MIT License
  • Specific citation: The Scientific colour maps by Fabio Crameri (Crameri 2018) prevent visual distortion of the data and exclusion of readers with colour­-vision deficiencies (Crameri et al., 2020) and the overview graphic is available via the open-access s-ink.org repository.
  • Related references:
    Crameri, F. (2018). Scientific colour maps. Zenodo. http://doi.org/10.5281/zenodo.1243862
    Crameri, F., G.E. Shephard, and P.J. Heron (2020), The misuse of colour in science communication, Nature Communications, 11, 5444. doi:10.1038/s41467-020-19160-7

  • Different aspect ratio versions
  • Light & dark versions
  • Colour-vision deficiency friendly
  • Readable in black&white
  • Colour maps: Open-access
  • Colour maps: Various formats
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Download colour maps

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