WebAIM Contrast Checker
webaim.orgCheck text and interface contrast with transparency and lightness controls.
Check text and interface contrast with transparency and lightness controls.
Dahlia reference material with cultivation and show information
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.
Generate distinct colours for categories in a data visualization.
Map twelve-step colour scales to interface roles and light or dark themes.
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
Dallas public datasets and data-literacy resources
A reusable graphics collection with search and colour selection
Compose linear, radial or conic gradients and copy the CSS.
Balance colour distinction and visual preference for categorical charts.
Check colour pairs, sample an image and collect results for a PDF.
Collect a palette with a magnifier and adjustable sampling area.
Linux editing with multicamera switching and colour scopes
A developed VirtualDub fork with more formats and deeper colour
Calibrate a display with a connected measurement device and software.