Leonardo
leonardocolor.ioGenerate interface themes from target contrast ratios and colour scales.
Generate interface themes from target contrast ratios and colour scales.
Extract image palettes with sampling, crop and colour-space controls.
Use named colour levels across interface code and design swatches.
Compare colour pairs interactively or check a complete palette in code.
Build colour scales and preview their roles in interface layouts.
Add a jQuery colour control with palettes, transparency and saved choices.
Change a colour matrix and see how it transforms an image.
Explore named colours and turn selected values into gradient steps.
See how traditional Sass colour adjustments transform a starting swatch.
Search palette ideas by theme or hex value and export the colours
Edit colour stops and transparency while viewing the resulting CSS
Cycle through palettes with adjustable hue, lightness and interpolation.
AI icon generator that turns short text prompts into app icons in under a minute.
Measure displays, generate colour-correction tables and verify the result.
View text contrast through different vision and lighting simulations.
Compare a text and background pair with editable colour values.
Attach a dependency-free colour popup to a page element.
Inspect a full-screen colour-vision simulation across applications.
Sui execution details, project activity and coin comparisons
Create colourful background images from several visual generators.
A personal selection of typefaces indexed by author, license and style.
Read and compare constitutions by topic
English explanations and exercises indexed by topic and level.