What’s it for?

Some kind of help on color theory?

Anybody have any pointers?

Nice site. :slight_smile: It’s for finding complementary colors for web design. Nice touch that it even provides the hex notation.

Pantone is the brand name for a company that produces color swatches . You can still buy them in art stores . They come with hundreds of pages of color variations and was used by graphic artists because they developed a formula for aspects of color based on chromatic scales and hues and provided specific chemical keys for those colors to the printing industry .
Looks like the site provides you with complimentary colors based on hue/chroma (that’s why you see sets of two?)

sorry, but this doesn’t belong in this forum.