Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Encycolorpedia - Providing hex color schemes, paint matching & search, color directory and color space conversions.
Sketch - Professional digital design for Mac.
HTML CSS Color Picker - HTML CSS Color Picker is an online website that provides you an extravagant color scheme that can be shared anywhere else.
Invision - Prototyping and collaboration for design teams
BeautyColorCode - BeautyColorCode is a reliable platform for getting your colors right, courtesy of the extensive color scheme library that is easy to share and download.