Boglárka is the Hungarian word for "buttercup" — the small yellow wildflower that grows across Europe.
Boglárka is widely used in Hungary.
Boglárka 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 Boglárka reduce to 6, The Nurturer. This is a traditional interpretive system, not a factual claim about the name.