In Colorado, driving with a blood alcohol concentration (BAC) of 0.08% or higher is considered driving under the influence (DUI). This can lead to legal consequences such as arrest, fines, license suspension, and even imprisonment. Additionally, drivers can be considered impaired with a BAC below 0.08%, which can also result in DUI charges. It's crucial for those affected by a DUI incident to consult with a Denver DUI injury attorney to navigate the legal system and seek compensation for any harm caused.