On Color Science

A Simple Web Developer’s Color Guide — Smashing Magazine

Laura Elizabeth never found color theory useful when trying to use color in her projects. Somewhat ironically, she’s been finding that the better she got at choosing and using color, the better she became in the theory behind it. In this article, Laura shares a simple color workflow that you can use in your next web project.

CSS Relative Colors

An interactive guide to learn CSS Relative Colors.

Reasonable Colors

Yes. Reasonable Colors is open-source (the annotated source-code is available on Github) and released under the MIT license. The color specimen document is also available to download as a PDF, JPEG, and WEBP image.

color-space — every color space, one tiny API, verified

An open collection of color spaces. Convert any space to any other with conventional ranges and independently anchored formulas.

CSS Color Spaces and Relative Color Syntax | 12 Days of Web

Learn how to define color palettes that are perceptually uniform using the new Oklch color space and the relative color syntax in CSS.

A perceptual color space for image processing

From personal project to industry standard Introduction added in 2025 When introduced Oklab in 2020, I never expected it to reach as far as...

The Easy Intro to the APCA Contrast Method

This is the APCA project repo on GitHub.Documentation linked below.

The Color API

The best color conversion, naming and scheming API out there.

Where to Find the Colors Your Screen Can’t Show You

An atlas of the vibrance of the real world

Where to Find the Colors Your Screen Can’t Show You

An atlas of the vibrance of the real world

Generating a Color Spectrum for an Image — Amanda Hinton

Walkthrough of building the Chromaculture Spectrimage analyzer that extracts and displays the color composition of an uploaded image.

Color Horse

The automatic color scheme generator

43081j/hueful

A library for converting, formatting and parsing CSS colours.