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Use a curated dataset of colour names and hex values.

Sample a browser colour, inspect its element and copy an adjusted value

Shape colour transitions and copy a multi-stop CSS gradient.

Configure a standalone colour picker with swatches and opacity controls.

Collect image colours and compare nearby colour-system references.

Connect a React or Preact colour control to application state.

Find named colours, inspect hex values and explore related shades.

Adjust text and background colours while checking their contrast.

Build colour-profile transformations into imaging software.

Vietnamese film viewing with subscriptions, free titles and rentals

Inspect Ethereum token holdings, label activity and export address histories

Fetch free latest or historical exchange-rate data from a public REST API without an API key.

Build trading tools and examine cBot behaviour on historical data

Measurement conversion including historical and cooking units

Build colour tools with JavaScript objects, conversions and gamut controls.

Turn British screen locations and regional ideas into a trip.

Historical-image search with free and paid download options

Historical and fine-art imagery with detailed people and artwork searches

Generate a chosen number of shades and copy their values.

Work with colour spaces and colour relationships in Go.

Use colour-science tables with explicit sampling, metadata and citations.

Find official colour-management specifications, registries and technical resources.

Build an eleven-step scale and export variables for a web project.

Edit a colour system in perceptual coordinates and copy design tokens.