Side by side
Leonardo vs WCAGKit Color Palette Generator
Both stand on color palette generators. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
Choose Leonardo to create and evaluate accessible color themes, particularly when you need contrast-based swatches, data visualization scales, or developer-ready output. Its free, open-source offering includes web and API access. Keep in mind that generated contrast ratios can be slightly higher than requested.
Visit Leonardo Free plan Web
WCAGKit combines palette generation with pair-by-pair contrast checks and suggested adjustments. Its browser-based calculations and CSS export make it useful for accessible color system work.
Visit WCAGKit Color Palette GeneratorThe facts
| Leonardo | WCAGKit Color Palette Generator | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | Web |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 1 |
| Maker | Not published | Not published |
| Website | leonardocolor.io | wcagkit.com |
| On color palette generators | #17 of 34 | #27 of 34 |
Leonardo: what it does well
- Generates swatches from target contrast ratios or target lightness.
- Adaptive themes adjust brightness, contrast, and saturation.
- Includes sequential and diverging scales for data visualization.
- Checks color differences across color vision deficiency types.
- Exports themes and scales as SVG and Tableau XML.
What to know first
- Generated contrast ratios may slightly exceed the requested values.
- The JavaScript package is installed with npm.
WCAGKit Color Palette Generator: what it does well
- Generates six palette roles from a chosen base color.
- Shows WCAG levels and contrast ratios for palette pairs.
- Suggests a nearby foreground color for failing pairs.
- Exports palettes as CSS custom properties.
- Color calculations happen in the browser; no signup is required.
What to know first
- The embed code includes a WCAGKit attribution link.
- Image extraction is not supported.
Alternatives to Leonardo Alternatives to WCAGKit Color Palette Generator The whole list