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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.

Shape film colour, grain and highlight glow with separate controls.

Build colour-profile transformations into imaging software.

Check text and interface contrast with transparency and lightness controls.

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

Public-domain small-scale map data

Generate a chosen number of shades and copy their values.

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

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

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

Preview webpage colours through eight simulation modes in Chrome.

Control gradient colour positions and the transitions between them.

Bring an existing set of colours together with a shared tint.

Build CSS gradients while exploring different colour spaces.

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

Choose colours with saturation scaled to the available RGB range.

Choose numbered shades whose separation indicates minimum contrast.

Build measured colour profiles with a documented command-line toolkit.

Share colour configurations and transforms across visual production tools.

Browse compact four-colour combinations with visible hex values