The bullish harami candlestick pattern (view full size chart) is one of the double candlestick patterns (i.e. it consists of two individual candlesticks), and it is a bullish pattern.
The bullish harami candlestick consists of a downward candlestick (e.g. a red candlestick), followed by an upward candlestick (e.g. a green candlestick) that opens above the close of the previous candlestick, and closes below the open of the previous candlestick (i.e. is contained within the previous candlestick).
Use In Trading
The bullish harami pattern can occur in a number of different contexts (e.g. at the beginning of a trend, during a trend, at the end of a trend, etc.), but it is most relevant when it occurs during a significant downward trend. The bullish harami is often used as an indication of the end of a downward trend, and therefore can be used as both a trade entry and a trade exit pattern (i.e. an exit from a short trade, and/or an entry into a long trade).
