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Create related palettes and CSS gradients from existing colour values.

PDF bookmark editing, page repair, and structure inspection

Trace photographic and film colour processes through documented examples.

An open-source desktop PDF toolkit with inspection and CLI tools

Generate a short sequence of gradient stops from supplied colours.

Browse official RAL colour families, codes and names.

Build browser colour grades with reusable exports and shared review.

Add a configurable colour and opacity picker through a web input attribute.

Convert colour values and collect palettes for design or code.

Turn a text description or photograph into a colour palette.

Model paint-like colour mixing in a JavaScript application.

Use versioned colour scales designed for accurate data communication.

Pick a physical screen pixel and paste a colour value in your code style

Convert colour spaces and model perception-related transformations in Python.

Build colour scales around shared lightness levels and contrast checks.

Chain colour transformations while keeping earlier values unchanged.

Inspect device colour ranges, profile conversions and measurement data.

Find named, community-contributed gradients for design and code.

Compare how six picker models organize colour choices.

Browse curated palettes by colour, mood, season and popularity.

Convert colours and generate data scales through a JavaScript API.

Shape multi-step colour scales with curves, locked colours and code exports.

Build palettes from community choices and carry their credits into exports.

Inspect a page's metadata, headings, links, schema and response behavior from a browser extension.