Ordered values
Use for ordered values that progress from low to high, such as density, time, or magnitude.
Scientific figures · HEX colours
Colour Palette Generator
Create discrete colour palettes for plots, diagrams, slides, and posters. Choose a standard scientific colour map, set the number of colours, and copy the HEX values.
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Palette settings
Recommended · colour-vision friendly
A perceptually uniform blue–yellow map designed with colour-vision accessibility in mind.
Generated palette
Loading colour maps…Select a swatch to copy its HEX value.
Choosing a palette
Values around a centre
Use when values depart from a meaningful centre, such as positive and negative deviations.
Separate groups
Use for distinct groups with no inherent order. Avoid using a continuous map for categories.
Cyclic values
Use only when the endpoints meet, such as phase, direction, or time of day.
Recommended labels favour perceptually uniform or colour-vision-friendly choices. Important differences should also use labels, symbols, or line styles rather than colour alone. Palette definitions are provided by D3 scale chromatic; the Okabe–Ito palette is credited to Masataka Okabe and Kei Ito. Selection guidance follows the Matplotlib colormap guide and Color Universal Design guidance. See third-party notices and privacy information.