Sleek HTML5 / Javascript Color Picker – iro.js
iro.js is a sleek, HSV color based JavaScript color picker for generating a pretty, HTML5 canvas based color wheel UI with touch support.
Color
Elegant Mobile-compatible Color Picker Component – pickr
The pickr JavaScript library helps you create an elegant, customizable, touch-enabled color picker for your app.
RGB Color Picker Slider In Vanilla JavaScript
A vanilla JS color picker that allows you to pick an RGB color by moving the Red/Green/Blue sliders or entering numbers between 0 to 255.
Vanilla JS Color Picker With Alpha Channel – vanilla-picker
A vanilla JavaScript color picker with alpha channel support that can be attached to any element.
JavaScript Library To Generate Linear Gradient Color Stops – gradStop.js
gradStop.js is a lightweight JavaScript library used to generate linear, equidistant color gradients with a specific number of stops.
Transition Between Background Colors On Scroll – Background Color Morph
Background Color Morph is a small (2kb minified) JavaScript library that applies a transition effect to background colors when scrolling down or up the webpage.
Color Naming Library For Developers – Coloraze
Coloraze is a small and easy color naming library that provides a lot of named colors for web developers and color designs.
Canvas Based Interactive Gradients Animation Library – Granim.js
Granim.js is a lightweight, dependency-free JavaScript library which helps create configurable, interactive gradients animations on an HTML5 canvas element.
Powerful Color Picker Component With Pure JavaScript – color-picker.js
color-picker.js is a pure JavaScript library for creating a color picker component with support for touch events and RGB/HEX/HSV color formats.
Configurable Color Transition Library – sweep.js
sweep.js is a vanilla JavaScript library which enables you to create smooth color transitions on any elements.