open-props/indigo.min.css

<div align="center"> 

:where(html){--indigo-0:#edf2ff;--indigo-1:#dbe4ff;--indigo-2:#bac8ff;--indigo-3:#91a7ff;--indigo-4:#748ffc;--indigo-5:#5c7cfa;--indigo-6:#4c6ef5;--indigo-7:#4263eb;--indigo-8:#3b5bdb;--indigo-9:#364fc7;--indigo-10:#2f44ad;--indigo-11:#283a94;--indigo-12:#21307a}