THIRD-PARTY NOTICES

Click Clack includes a modified RGB-to-HSL conversion routine in
packages/design-system/src/tokens/color-utils.ts adapted from block/buzz at revision
f86cfc7369d4471f8939ed98be6f597b0a4b0bb2:
https://github.com/block/buzz/tree/f86cfc7369d4471f8939ed98be6f597b0a4b0bb2

Copyright 2026 Block, Inc.
Licensed under the Apache License, Version 2.0. The licence is available beside this notice at
/licenses/block-buzz-APACHE-2.0.txt.

Click Clack generalized the routine's input type, changed achromatic handling and output rounding,
and integrated it into its generated design-token bridge.

Buzz's broader source file records a port from block/builderbot. Review of Builderbot's complete
public theme-file history found no RGB-to-HSL routine; the adapted routine first appears in Buzz
commit 41d56cfcbf83a842259abf283860bfedbc686a93. No separate Builderbot-derived portion or notice was
identified in Click Clack.

The reviewed Buzz and Builderbot roots contained no NOTICE file. Click Clack as a whole remains
UNLICENSED.