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An interconnected reference for advanced mathematical ideas

Measure a display, create its colour profile and verify the result.

Animate colour gradients on a web canvas with configurable states.

Explore acrylic or oil mixtures using the paints in your palette.

Browser painting with a reference overlay and colour sampling

Choose geoscience colormaps with numerical tables and import instructions.

Find limited palettes and move their colours into a pixel-art editor.

Musical ear training with games and daily drills

Generate distinct colours for categories in a data visualization.

Map twelve-step colour scales to interface roles and light or dark themes.

Use one Python interface for several established colour-palette collections.

Compare text contrast with its size, weight and colour direction in view.

Creative and archival images searchable by keyword, colour or reference

SVG illustration collections with built-in editing tools

A reusable graphics collection with search and colour selection

Compose linear, radial or conic gradients and copy the CSS.

Balance colour distinction and visual preference for categorical charts.

Check colour pairs, sample an image and collect results for a PDF.

Music courses across performance, production and business.

Ear training organised into focused musical games

Design and assess palettes using hue, chroma and luminance.

Modern interiors, colour guides and home care ideas

Collect a palette with a magnifier and adjustable sampling area.

Calibrate a display with a connected measurement device and software.