palettes & patterns - Color Visualisation App
RegexBuddy - RegexBuddy is your perfect companion for working with regular expressions.
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!
Regex Forge - An Ultimate Regex Editor for macOS
Supa Palette - Supa Palette plugin for Figma is a powerful palette editor/generator for modern designers.
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.