Design Seeds is a fantastic website to help you find colours that complement each other.
On the palettes search you can choose a colour by adjusting RBG sliders and once you click the ‘go get it’ button, some ready made colour palettes appear with the colours based on an accompanying photo.
This is a great tool for helping you decide on colour schemes as a graphic designer – and I suppose it could also help people decide what colour to paint their walls too.
Five years ago, generators like this were presented in a really boring plain techie way. This is pretty and dead easy to use. The Internet and how we use it has developed so incredibly fast.