灰 is a Chinese hanzi, listed here under the keyword “ashes”. It is built from 𠂇 (by one's side) and 火 (fire). It appears as a component in 10 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “by one's side” + “fire”. 灰 is among the results, together with every other character containing the same shapes.
Open 灰 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.