暗 means dark and is a JLPT N3 kanji. It has 13 strokes and uses the sun / day radical (日).
Stroke order · 13 strokes
On'yomi (音読み)
アン
Kun'yomi (訓読み)
くら(い)、くれ(る)
Radical
日 · sun / day
Strokes
13
How to remember 暗
Another sound (音) presses down over the sun (日) and the light goes out. 暗い (dark), 暗記 (to memorize) — 'being able to say it even in the dark' is the true meaning of memorization.