WebAIM Contrast Checker
webaim.orgCheck text and interface contrast with transparency and lightness controls.
Check text and interface contrast with transparency and lightness controls.
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.
Editorial news photographs with usage-based licences and prepaid credits
Choose map colours by data type and export reusable schemes.
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
Modern interiors, colour guides and home care ideas
A reusable graphics collection with search and colour selection
Compose linear, radial or conic gradients and copy the CSS.
Check colour pairs, sample an image and collect results for a PDF.
Data governance that builds a deterministic knowledge graph from code and data
A Python and R IDE that pairs script and notebook editing with live data exploration tools.
An interactive introduction to musical relationships
A sequencer designed for musical experimentation
Collect a palette with a magnifier and adjustable sampling area.