The lyrics to Ive's song "Blue Blood" convey a sense of urgency and passion. In the beginning, the singer asks for someone's hand and urges them to trust and rely on them. They describe how the flame starts small but quickly becomes intense and hot. The singer then suggests going far away, pushing themselves until they are out of breath, and questioning if the other person can handle them between their passion and coldness.

The chorus asks about the blood type of the listener and reveals that the singer is "blue" in response. This color represents their noble heart and dignity. They emphasize the importance of not forgetting about their unique color and their need to possess everything. They caution against laughter and advise the listener to stay on guard.

The next verse encourages the listener to listen closely to the sounds of rough waves and feel the rhythm of the singer's heartbeat. They encourage the atmosphere to keep going until the sun rises.

The final chorus repeats the question about the listener's blood type and reaffirms their "blue" status. It reinforces the idea that the listener possesses a passionate and transparent heart that is "blue."