vanilla-picker
A simple, easy to use vanilla JS color picker with alpha selection.
@eastdesire/jscolor
Web color picker with opacity channel (alpha channel) and custom palette. Supports CSS colors such as rgba() and hex, including #rrggbbaa.
@r-tek/colr_pickr
Colr Pickr, a vanilla JavaScript color picker component built with SVGs, with features like saving colors. Similar design to the chrome-dev-tools color picker.