Spectral.js is a paint like color mixing library utilizing the Kubelka-Munk theory.

Emulatrix - JavaScript and WebAssembly Emulator - Sega Genesis, Nintendo, Super Nintendo, GameBoy, GameBoy Color, GameBoy Advance, MAME32, DOSBox and Virtual Machines

A tool for creating nice, percerptually correct and colorblind-safe color palettes.

Hex values of all 2310 Pantone colors

免费的180个美丽CSS3渐变样式和超清渐变图

Colour Science Precis for the CGI Artist

Rest API that returns a bunch of color names for a given color-value

A proposal and draft spec for a Color object for the Web Platform, loosely influenced by the Color.js work. Heavily WIP, if you landed here randomly, please move along.

A simple tool to make ascii art from an image using excel colored cells.

List of 256 color codes for Xterm including an example of the color, Xterm Name, Xterm Number, HEX, RGB and HSL code.

A comprehensive library of color books from various paint companies, implemented in Sass, Less, Stylus, and JSON. Bring this into your preprocessor of choice to have easy access to a huge library of colors, without any performance impact on the end-user.

A simple RGB colour guessing game

Plugin for kibana Version 4.x, 5.x, 6.x and 7.x to change color of metric depending to the planned state of health

A utility to track objects on a canvas by unique px color

Multi Brand Colors with support for CSS/CSS-Vars/SCSS/SASS/Stylus/LESS/JSON

𝜟𝜱✴︎ or Delta Phi Star is a variant method of determining lightness contrast, and a sibling of APCA and SACAM. It is a simplified version using easily invertible standardized maths, however it lacks some useful properties such as polarity sensitivity. In fact, it is intended for applications where a "general" simplifed perceptual contrast is des…

List of free stuff for your website

Did you ever want to know what the current time would look like? Good news: now you can!

As a CSS gradient generator tool, this website lets you create a colorful gradient background for your website. 🌈

https://www.colour-science.org