The spelling of "Blacia" is based on the pronunciation of the word. It is pronounced as /blæʃə/. The 'b' represents the voiced bilabial plosive sound while 'l' is the voiced alveolar lateral approximant sound. The 'a' is pronounced as the short vowel sound /æ/, and 'c' is pronounced as the voiceless palato-alveolar affricate sound /ʃ/. The second 'a' is pronounced the same as the first one, followed by the unstressed schwa sound /ə/. Therefore, the spelling of "Blacia" represents its pronunciation using the IPA phonetic transcription.