leonardo VS rainbow

Compare leonardo vs rainbow and see what are their differences.

leonardo

Generate colors based on a desired contrast ratio (by adobe)
contrast-ratio A11y Contrast Color Colors Colorscheme colorscheme-generator Color Picker color-theme color-themes Dark color-generator color-palette color-palette-generator color-theme-switcher
Source Code
leonardocolor.io
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rainbow

Rainbow — Accessibility Contrast Tool for Text on Images (by rodneylab)
Gatsby Contrast contrast-ratio Overlay Alpha Rust netlify-functions Serverless A11y Accessibility
Source Code
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leonardo rainbow
1 1
1,845 1
1.8% -
5.9 3.2
15 days ago almost 3 years ago
JavaScript JavaScript
Apache License 2.0 BSD 3-clause "New" or "Revised" License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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leonardo

Posts with mentions or reviews of leonardo. We have used some of these posts to build our list of alternatives and similar projects.

rainbow

Posts with mentions or reviews of rainbow. We have used some of these posts to build our list of alternatives and similar projects.
  • Accessible Text on Images: Nail the Contrast Ratio
    1 project | dev.to | 30 Jul 2021
    The Rainbow tool was built using a static site generator. It's power lies in a Rust serverless function which does the maths. It works by finding the pixel (in the image) with the lowest contrast to the text colour. Then it uses a bit of High School Maths (the Newton-Raphson numerical technique) to work out the overlay transparency which satisfies the contrast ratio supplied (4.5 by default). There are a few optimisations built in such as resizing the image before getting going to speed up the later calculations. The code is open source and you can view the Rainbow Site code on the Rodney Lab Git Hub page. Now you know what the Rainbow tool is shall we look at how to use it?

What are some alternatives?

When comparing leonardo and rainbow you can also consider the following projects:

mdl-color-palette - Generate Random Color From Material Color Palette

a11y-contrast - A CLI utility to calculate/verify accessible magic numbers for a color palette.

testimonial - Jamstack app using Gatsby, Netlify, and FaunaDB.

color-palette-extraction - Create a color palette using median cut with Javascript

next-on-netlify - Build and deploy Next.js applications with Server-Side Rendering on Netlify!

shades - Tints and shades generator in React.

apca-w3 - The APCA version, to be licensed for use with guidelines: W3/AGWG.

coloreact - A tiny Color Picker for React

Alt-Text-Generator - Generate alt text for your images!

hcv-color - 🌈 Color model HCV/HCG is an alternative to HSV and HSL, derived by Munsell color system, usable for Dark and Light themes... 🌈

bootstrap-vue - BootstrapVue provides one of the most comprehensive implementations of Bootstrap v4 for Vue.js. With extensive and automated WAI-ARIA accessibility markup.

leonardo vs mdl-color-palette rainbow vs a11y-contrast leonardo vs a11y-contrast rainbow vs testimonial leonardo vs color-palette-extraction rainbow vs next-on-netlify leonardo vs shades rainbow vs apca-w3 leonardo vs coloreact rainbow vs Alt-Text-Generator leonardo vs hcv-color rainbow vs bootstrap-vue