# Han blue

> English word · Noun

## Definitions
1. A pigment made from barium copper tetrasilicate (BaCuSi₄O₁₀), an artificial blue pigment, used by ancient Chinese for over 2 millennia before dying out at the end of the Han dynasty; one of the few alternates to azurite in ancient times.

## Etymology
From Han + blue.
From being a blue pigment last used during the Han Dynasty.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/han-blue