I really like how Duminda Perera showcased color palettes in “Minimalist Color Palettes 2015“.
I decided to use this technique with the color theme of my wedding.
It is entirely built using HTML, CSS and SVG. Click here to open it full screen, see it embedded below and read the code on GitHub. The background is a merge of gradient, blur and subtle noise using advanced SVG filters, which is rather CPU-intensive.
Live view of the color palette showcase web page: