Head-to-Head: Primer CSS vs Radium Analysis


v21.0.9(22 days ago)

This package is actively maintained.The package doesn't have any types definitionsNumber of direct dependencies: 2Monthly npm downloads

@primer/css is a utility-first CSS library that provides a set of pre-defined classes to help you style your HTML elements. It's created and maintained by GitHub's design system team and follows the Primer design system. @primer/css offers a robust set of styling options for typography, layout, color, and more.

Alternatives: Bootstrap, Tailwind CSS, Bulma

Tags: cssdesigngithubutility-firstlightweight


v0.26.2(over 1 year ago)

This package is deprecated. Consider finding alternatives.Types definitions are provided via a separate npm package: @types/radiumNumber of direct dependencies: 4Monthly npm downloads

Radium is a popular JavaScript library that provides inline styling for React components. It allows you to write your CSS styles directly in your JavaScript code using JavaScript objects, which are then applied to the corresponding components. Radium enhances the styling capabilities of React by providing support for pseudo-classes, media queries, keyframes, and more.

Alternatives: styled-components, emotion, aphrodite

Tags: javascriptreactstylinginline-stylescss-in-js



@primer/css is developed by GitHub and is part of the Primer CSS framework, which is widely adopted and used in many GitHub projects. Radium is also popular and has a good following, but it might not be as widely known as @primer/css.


@primer/css is primarily focused on providing a set of CSS utility classes and components, along with some JavaScript functionality for interactive components. Radium, on the other hand, is a JavaScript library that enhances inline styles with extra features such as media queries, pseudo-classes, and vendor prefixes.


@primer/css works well with any JavaScript framework or library, including React. It provides ready-to-use styles and components that can be easily integrated into your project. Radium, on the other hand, is specifically built for React and requires you to use inline styles in your components.


@primer/css focuses on performance and optimizes styles for efficient rendering. It follows a utility-first approach, which helps reduce CSS file size and improves performance. Radium's inline styles can add some overhead to rendering, especially if you have a large number of styled components.

Developer Experience

@primer/css provides a comprehensive set of utility classes and components, making it easy to style your components. It has good documentation and is well-maintained. Radium also has solid documentation and provides additional features for styling React components inline. However, using inline styles might require a paradigm shift and additional learning for developers accustomed to traditional CSS.

Updates and Maintenance

@primer/css is actively maintained by GitHub, and updates are released regularly. It is part of a larger CSS framework, which ensures ongoing development and support. Radium is also actively maintained, and updates are released to address bugs and introduce new features when needed.