- Chroma.js - JavaScript library for dealing with colors.
- pigment - Color information, conversion and manipulation library
- GradStop.js - Generate gradient color stops.
- Colorable - Color palette combination contrast tester.
- Adaptive Backgrounds - Extract dominant colors from images and apply to its parent (jQuery Plugin).
- Coloor - Image preloading utility.
- Color Thief - Grab color palette from an image.
- Colorify.js - Simple, customizable, tiny JavaScript color extractor.
- Colofilter.css - Duotone filters made with CSS.
- Polychrome - A small library for parsing and manipulating colors.
- Palettable - Palettable (formerly brewer2mpl) is a library of color palettes for Python
- picocli - Small library for creating Java command line applications with ANSI colors and styles.
- granim.js - Create fluid and interactive gradient animations.
- tinygradient - Fast and small gradients manipulation.
- TinyColor - Fast, small color manipulation and conversion for JavaScript.
- Distinct Colors - Generate a palette of visually distinct colors.
- color2k - A color parsing and manipulation lib.
- Color Picker for Data - Hold chroma constant and pick your palette with ease.
- Colorbrewer2 - Multi-hue and single-hue palettes for heat maps and data visualization.
- Coolors - Generate infinite color palettes for your designs and share.
- Flat UI Colors - UI color set.
- Material Design Colors - Material Design Colors, Flat UI Colors and Material Design Icons.
- Palettab - New color palette and font inspiration with every tab (Chrome Extension).
- Paletton - The Color Scheme Designer.
- Pictaculous - Generate color palette with an image.
- Adobe Color Wheel - Create color schemes with the color wheel.
- Drag Gradients - Generate and customize multiple css3 radial gradients.
- SassMe - Visualize SASS color functions in real-time without compiling.
- Shade - Mathematically derived gradient explorer.
- Colourco - Easily and intuitively combine colours.
- HSL Color Picker - HSL Color Picker.
- SVG Color Filter Playground - Understand how feColorMatrix works.
- Random A11y - Generates a random palette that is a11y friendly.
- Save My Palette - Save, share, and export your color palettes.
- Colordot - A color picker for humans.
- Material Palette - Material Design color palette generator.
- 0to255 - Find variations of any color.
- 147 Colors - Learn CSS color names.
- Shutterstock Spectrum - Search Images by Color with Spectrum.
- ColRD - Create and share color inspiration with the world.
- CheckMyColours - Check color combinations of all DOM elements for sufficient contrast.
- Contrast-A - Inspect color combinations for acceptable contrast and displays.
- Palettable - Generate beautiful color palettes with no prior design knowledge.
- Colorgorical - Generate a palette with n colors.
- Color Library - Automated Color Separation.
- Color Supply - Inspirational color palettes from designers & illustrators around the world.
- ColorFavs - Create and Discover Beautiful Color Palettes and Colors.
- Colormind - Colormind is a color scheme generator that uses deep learning.
- iColorpalette - Create, browse or export (aco, ase, svg, png, pdf) color palettes by color or themes.
- geenes - Create a color scale in seconds, then export it to sketch or code.
- Tints and Shades - Display tints and shades of a given hex color in 10% increments.
- Sorted colors - Sorted named CSS colors in a way that it shows related colors together.
- Croma - Generate color palettes from image and colors
- Hexcolorpedia - Hex color information, Color conversion, Shades, tints, tones, Pantone match, color blending and huge Color palettes collection.
- ColorHunt - Color palettes with quick preview feature.
- COLOURlovers - Tools to create color palettes as well as pattern designs.
- Swiss Style Color Picker - Color palettes collection.
- UI Gradients - Handpicked collection of beautiful colour gradients.
- Color Hex Palettes - Discover the new color palettes.
- Color Palettes - Decorate your house, flat, bedroom, kitchen, living room and wedding with color ideas.
- Design Seeds - Colors found in nature and the aesthetic of purposeful living.
- Gradients - Curated gradients.
- Colour Names - List of colour names in CSS.
- LOL Colors - Curated color palette inspiration.
- BrandColors - Official color codes for the world's biggest brands.
- Color Lisa - Color palette masterpieces of the world’s greatest artists.
- Cohesive Colors - A tool to create cohesive color schemes.
- Colordrop - A collection of great looking color palettes.
- ColorsWall - Place to store your color Palettes and generate tool.
- Open Color - Colors tested on deuteranopia and protanopia mode.
- ColorClaim - Subtle color combinations.
- Color Farm - Handpicked colors from the popular Dribbble shots.
- WebGradients - A free collection of 180 linear gradients.
- Dave Green's 'cubehelix' colour scheme - Resources for the cubehelix family of colour schemes.
- Color Name List - Huge curated list of unique color names.
- Finding the Right Color Palettes for Data Visualizations
- Trendy Web Color Palettes and Material Design Color Schemes & Tools
- How I Work with Color
- Color Palette Documentation for Living Style Guides
- How I Learned About Color Mixing
- The (Unfinished) Basics of Colour
- The Power of Colour in App Design
- Create Emotion With Color In UX Design
- How to Design for Color Blindness
- The Principles of UX Choreography
- How to create a color story
- The Psychology of Color in Marketing
- Algorithm for automatic harmonious color selection for the image
- Oiling the Color Wheel with Jade + Sass
- Take color inspiration from the masters
- Build a Color Scheme: The Fundamentals
- Principles of Color and the Color Wheel
- Color and Emotion: What Does Each Hue Mean?
- Color Theory for Designers, Part 1: The Meaning of Color
- A Simple Web Developer’s Guide To Color
- Design Accessibly, See Differently: Color Contrast Tips And Tools
- The Code Side Of Color
- How to create the right emotions with color in web design
- Introduction to Color Theory
- Picking a color for your brand
- Finessing `feColorMatrix`
- Designing in color
- Color Realism and Color Science
- The Psychology of Color in Marketing and Branding
- A Guide to Color and Conversion Rates
- A Nerd’s Guide to Color on the Web
- Cubehelix, or How I Learned to Love Black & White Printers
- A colour scheme for the display of astronomical intensity images