墨 is a Chinese hanzi, listed here under the keyword “ink”. It is built from 黑 (black) and 土 (soil). It appears as a component in 5 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “black” + “soil”. 墨 is among the results, together with every other character containing the same shapes.
Open 墨 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.