Adding OKLCH color codes will be a great addition. Thank you for your suggestion!

There are 2 art style pages namely Advertising and Posters styles: https://paletteinspiration.com/advertisement-palettes/ https://paletteinspiration.com/poster-palettes/

I am aware that Advertisement palettes mostly based on Alphonse Mucha work since I could not include more recent ad illustrations for copywrite reasons.