I can't explain it much more than Anagrama's own project description. Lots of negative space contrasted with bits of color = pure elegance!
"White was our primary tool for design. As a result of this the attention was fully oriented to the colorful macarons. We placed two lines in our design in cyan and magenta, as a relation with a modern French flag to inject a vanguard vision to the identity. We selected Didot (created by Firmin and Pierre Didot), a French typography that would present the brand with sophistication."