Eunchae is from the Korean eun (은 — silver, grace) + chae (채 — colorful, brilliance). Eunchae in modern Korean naming — has surged in popularity since LE SSERAFIM's 2022 debut. Princess Eunchae — modern Korean royal heritage naming.
Eunchae does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Eunchae reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.