彤 is a Chinese hanzi, listed here under the keyword “red”. It is built from 丹 (cinnabar (native hgs)) and 彡 (hair). It appears as a component in 2 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “cinnabar (native hgs)” + “hair”. 彤 is among the results, together with every other character containing the same shapes.
Open 彤 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.