Weak to: Earth and Water. Dark Release is used to absorb and redirect chakra and energy in general. This makes it so that while it can absorb the chakra in Earth and Water techniques, it will not absorb the Earth itself or the Water produced by techniques since it doesn't work like Fuuinjutsu. Earth suffers double strength towards Dark Release (meaning that an S-Rank Dark release can be stopped by a B-Rank Earth technique).
Strong to: Raw chakra, Fire, Lightning and Wind. Raw chakra absorption and redirection is the core of Dark Release, making it gain double strength towards it (B-Rank Dark overcomes S-Rank Raw Chakra).