culori

Overview Culori is a JavaScript color library that supports the conversion and manipulation of all formats defined in the CSS Colors Level 4 specification, plus additional color spaces. It handles color differences, interpolation, gradients, blend modes and much more. Culori is built by Moqups and distributed as an npm package. It is designed for developers building JavaScript applications who need to work with colors programmatically beyond basic CSS color utilities. Key Benefits Colors are represented as plain JavaScript objects passed through a series of functions, making the library easy to extend. Does not equate an undefined alpha value with an opaque color, giving developers control over how to interpret opacity. Supports all color spaces defined in the CSS Colors Level 4 specification plus additional spaces beyond the spec. Offers a tree-shakeable version for optimizing bundle size in production builds. Provides comprehensive functionality including color differences, interpolation, gradients, and blend modes. How It Works You install the library via npm install culori , then import individual functions as needed. Colors are plain JavaScript objects that you pass through a series of transformation functions, converting between color spaces, adjusting channels, or computing differences. Use Cases Front-end web developers who need to convert colors between CSS color spaces for dynamic styling. Data visualization engineers building color scales, gradients, and interpolation for charts and maps. Design tool engineers implementing color pickers, blend modes, or accessibility contrast checking utilities. JavaScript library authors who need a robust, extensible color manipulation engine as a dependency. Node.js developers building server-side image processing or color analysis pipelines. Why Choose This Product Culori is best suited for JavaScript developers who need a function-oriented, tree-shakeable color library with comprehensive CSS Colors Level 4 coverage. It is open source and available as a free npm package with no licensing restrictions.