The site for the formation of color schemes (gamma) of the application or website?

From the core:
www.colourlovers.com - ready palette from which to push off or use as is (ideal for prototyping)
https://colorscheme.ru/ - selection palette on the color schemes with handy extra tools (a fine selection of close colors, text overlay, preview on conditional website, etc.)
https://color.adobe.com/ru/create/color-wheel/ - selection palette on the color schemes, manual selection of a palette image and the presets

colorsupplyyy.com
color.koya.io
colorhunt.co
color.romanuke.com
mycolor.space

Took away one day from a rather large crowd of references to such services. Just try it. Functions are different from them, but they perform well and without problems. (well I think so)