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color-palettes

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Select colormaps and qualitative palettes for scientific figures using perceptual-uniformity, color-vision-deficiency safety, and luminance-monotonicity criteria. Covers Crameri scientific colormaps, viridis/cividis/magma, Okabe-Ito categorical, ColorBrewer, and the rainbow/jet critique. Use when choosing palettes for heatmaps, scatter, networks, or any encoding where color carries quantitative or categorical meaning.

When to use

• choosing palettes for heatmaps
• choosing palettes for scatter plots
• choosing palettes for networks
• encoding quantitative meaning with color
• encoding categorical meaning with color
• selecting Crameri scientific colormaps
• selecting viridis family colormaps
• selecting Okabe-Ito categorical palettes

When not to use

• categorical data with more than 20 groups

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