丹

Also connotes “sincerity, devotion” (정성스러움).

Pictograph:

In oracle bone script (甲骨文), 丹 depicted a ladder-shaped frame (like ᄑ) with a dot inside.

The ladder shape represented the entrance to a cinnabar mine; the dot indicated the cinnabar itself.

Through the seal script (篆書) era, this form remained stable.

By the regular script (楷書) stage, the character’s shape evolved into its current form.

丹 appears in color terms, traditional medicine, alchemy, and literary expressions.

Common compounds:

단색 (丹色) — red color

단심 (丹心) — sincere heart; loyalty

단약 (丹藥) — elixir (alchemy; traditional medicine)

단전 (丹田) — dantian; energy center (Daoist/medical)

단청 (丹靑) — traditional multicolored painting (architectural)

Proper nouns:

덴마크 (丹麥 / 丹麦) — Denmark (abbrev. 丹 in Chinese contexts)

Extended usage: in traditional medicine and Taoist alchemy, 丹 refers to cinnabar (mercuric sulfide, a red mineral).

In Modern Mandarin, 丹 (dān) appears regularly in compounds and proper nouns (e.g., 丹心, 丹麦).

Unlike 赤 (red, often plain or literal), 丹 carries a ritual, refined, or symbolic red.

Related characters (red & sincerity):

赤 — red

朱 — vermilion; cinnabar-red

紅 — red; popular red

心 — heart (for 丹心)

誠 — sincerity

Among these, 丹 blends color, ritual symbolism, and moral sincerity.