Colour is a very subjective thing, what works for one person wont necessarily work for another. So any help with picking complementary colours is always a bonus.
A well used colour pallet is Google’s Material UI palette. Originally developed for creating apps with harmonious consistent colour it can be found used all over websites and android apps to good use.
- Googles own Colour tool (https://material.io/color) can help you pick complementary colours and text that stands out well.
- You can pick colours from the Google material UI pallet in nice big colour blocks with http://materialuicolors.co
Other (non material UI) pallet tools:
A tool I use to grab colours, mix them and helps give guidance on colours that go together is ColourCache I find it great for keeping a record of colours used on each site.
So now you can pick the right colours for your website or even match the curtains with the drapes in your spare room!
Now forget the rules and make yourself stand out but be careful you could end up on a site like one of these: Color combinations hell death sentence designs.