Open-source alternatives to PleaseJS

TinyColor is a JavaScript color manipulation library used for parsing, converting, and modifying colors across various formats and color spaces. It functions as a color space conversion tool and a web accessibility contrast checker to ensure compliance with readability standards. The library provides a color palette generator for creating monochromatic, analogous, and complementary color schemes from a starting color. It also translates colors between hex, RGB, HSL, HSV, and named formats. Additional capabilities include color parsing and normalization, programmatic manipulation of brightnes

This project is a CSS color utility library and palette framework designed to standardize the application of colors to text, backgrounds, and borders on the web. It provides a web color style system with predefined classes and defaults to accelerate the visual styling of web prototypes. The system utilizes skin-based color theming, allowing users to swap entire color palettes by changing top-level classes. It employs a utility class system backed by global CSS variable mapping to ensure visual harmony across different UI elements. The framework supports rapid UI prototyping and general web c

vibrant.js is a JavaScript color extraction library used to identify dominant color palettes from images based on the Android Palette algorithm. It functions as an image palette generator and a color processing tool that converts extracted data between RGB, HSL, and Hexadecimal formats. The library analyzes image pixels to categorize colors into specific profiles, including vibrant, muted, dark, and light. It also includes an accessible text color calculator that determines high-contrast hex colors for text overlays based on a selected background color. The toolset covers automated palette g

randomColor is a programmatic utility for generating harmonious, aesthetically pleasing color strings for use in web stylesheets and digital user interfaces. It functions as a random color generator that produces values in hexadecimal, RGB, and HSL formats. The library uses a logic-based system that calculates hues and luminosity in HSL space to ensure visual harmony. It allows for the application of specific constraints to brightness, transparency, and hue offsets to limit the generated color spectrum. The tool provides capabilities for programmatic color generation across multiple output f

chroma.js is a JavaScript library for color manipulation, space conversion, and the generation of data visualization color scales. It provides a system for transforming colors between formats including RGB, HSL, Lab, LCH, OKLab, and CMYK, alongside tools for parsing and modifying colors across these spaces. The library specializes in data-driven color mapping, using algorithms such as Cubehelix, Bezier interpolation, and ColorBrewer palettes to translate numeric data into visual gradients. It includes a perceptual color difference calculator that utilizes CIE 2000 Delta E and Euclidean metric

This is a JavaScript color manipulation library used for converting color spaces, formatting CSS strings, and computing luminosity ratios. It provides tools to transform color values between different mathematical models, including RGB, HSL, and CMYK. The library includes a web accessibility contrast calculator to compute luminosity and contrast ratios, ensuring text readability meets accessibility standards. It also features a CSS color formatter that exports values as hex strings, numeric arrays, or CSS-compatible strings. The toolkit covers broader capabilities for frontend color manageme

This project is a general purpose library for the .NET ecosystem, providing a collection of reusable helper methods and APIs for common programming tasks. It encompasses a UI component library for cross-platform development, a toolkit for MVVM architecture, and specialized utilities for memory management and native interoperability. The library distinguishes itself through high-performance memory abstractions, such as pooled buffers and contiguous two-dimensional memory spans, designed to reduce garbage collection pressure. It also provides native interop wrappers and bindings to facilitate d

PostCSS is a CSS post-processor and abstract syntax tree transformation tool that parses stylesheets into a structured tree for programmatic analysis and modification. It functions as a plugin-driven pipeline where JavaScript plugins can modify, insert, or delete nodes to transform styles. The project provides a framework for building a custom plugin ecosystem to extend the CSS language with non-standard features such as loops, conditionals, and shorthand properties. It supports multi-syntax parsing through pluggable parsers and stringifiers, allowing it to process various style formats and c