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Parse a CSS colour and chain adjustments in JavaScript.

Turn three RGB channel values into a hexadecimal colour code.

Adjust text and background colours while checking their contrast.

Browse named CSS colours beside their values and aliases.

Build a JavaScript colour picker from modular interface controls.

See how traditional Sass colour adjustments transform a starting swatch.

See how a colour pair performs for different text sizes.

Adjust CSS colours and calculate contrast with focused JavaScript functions.

Generate a short sequence of gradient stops from supplied colours.

Manipulate common colour representations with a small Python interface.

Edit one colour across familiar web formats and wide-gamut OKLCH.

Generate a chosen number of shades and copy their values.

Build a resizable colour picker with optional fields and alpha controls.

Inspect colour codes, build harmonies and extract palettes from images.

Inspect a colour, compare approximate matches and build a gradient.

Choose geoscience colormaps with numerical tables and import instructions.

Compare a text and background pair with editable colour values.

Pixel painting with protected palette colours and indexed or RGB canvases

Compare how six picker models organize colour choices.

Pick screen colours, adjust their values and keep small Windows palettes.

Sample and translate colour values in a portable desktop application.

Choose scientific colour maps and inspect or adapt them in Python.

Use continuous and categorical colour maps in Python visualizations.

Browse official RAL colour families, codes and names.