Best Hexadecimal color codes for Colourful Web designing?

Question

I like #e7e7e7, #fcff79 and #dadada , Can anyone give me some more ideas which Is better for making GUIs more attractive?

Answer 1

//HTML Color Codes
https://htmlcolorcodes.com

Answer 2

http://colormind.io

Answer 3

Get idea from this program

https://code.sololearn.com/WpUTZK1IP81G/?ref=app

Answer 4

I like to use just randomly generated, and it's opposite color, but it has a weakness if color is (127, 127, 127).

Also i like combinations such as (63, 0, 0)+(255, 0, 0), (0, 63, 0)+(0, 255, 0) and (0, 0, 63)+(0, 0, 255).

Answer 5

Thanx , but that wasn'the thing I was looking for, I meant what are the best colour codes according to you, those websites have soo many color codes I dont know which one to use.