visible light - Why is the bottom part of a candle flame blue

What’s the explanation behind the bottom part of a candle flame being blue? I googled hard in vain. I read this. I don’t understand how it’s explained by the emission of excited molecular radicals

Do flames contain plasma? Science Questions with Surprising Answers

What is the Temperature of Fire?

Emission spectrum of candle, blue base, This is the emissio…

What Happens to Candle Wax When a Candle Burns

Frequency and Phase Characteristics of Candle Flame Oscillation

The 14 Best-Smelling Candles, According to Experts

Here's how to try candle therapy - Times of India

Which is the hottest zone in a burning flame? Why? - Quora

Why is a candle flame round and blue at zero gravity? - Quora

Flame Test: Red, Green, Blue, Violet? - Activity - TeachEngineering