The Swedish K can take on two different sounds.
K + E, I, Y, Ä, Ö → [ɕ]*
kedja
chain
kista
chest, coffin, casket
kyrka
church
källa
spring
kök
kitchen
K + A, O, U, Å and consonant → [k]
kall
cold
kopp
cup, mug
kung
king
kvinna
woman
kål
cabbage
In some loan words, K + E, I and Ö is also pronounced like a regular K because of the original pronunciation. kö [køː], queue, kör [kœr], choir, arkiv [ar’kiːv], archive, monarki [mʊnar’kiː], monarchy, moské [mɔs’keː], mosch, and kex [keks], biscuit. (Kex is pronounced the Swedish way [ɕeks] in some dialects. For instance in Gothenburg dialect.)
In softly emphasized syllable or ending syllable, K + E and I doesn’t turn into [ɕ]. Historiker [his’tuːrikər], historian, rike [”riːkə], kingdom, and tråkig [”troːkɪ(g)], boring.