Colorado Age of Consent: What the Law Says and What It Means

Colorado’s age of consent is 17 years old. Sexual contact between an adult and a person under 17 can result in serious criminal charges under Colorado law regardless of whether the contact was consensual. Understanding exactly what the law covers, how Colorado’s Romeo and Juliet exception works, and what the criminal consequences are for violations is essential for anyone who has questions about their legal exposure or who is facing charges.
Baker Law Group, PLLC represents Colorado residents facing criminal charges related to sexual offenses and provides direct legal counsel on the specific charges, defenses, and consequences that apply to each case.
This page explains Colorado’s age of consent, the Romeo and Juliet law, how the law applies to common situations including relationships between young adults close in age, and what happens when someone is charged with a sexual offense involving a minor.
What Is the Legal Age of Consent in Colorado?
The legal age of consent in Colorado is 17 years old. A person who is 17 or older can legally consent to sexual contact under Colorado law. A person who is 16 or younger cannot legally consent to sexual contact with an adult, regardless of their expressed willingness to participate.
Colorado’s age of consent laws are built from several criminal statutes under C.R.S. § 18-3-401 et seq. The most significant is C.R.S. § 18-3-405, which makes sexual contact with a victim under 15 years of age a class 4 felony regardless of consent. A separate statute, C.R.S. § 18-3-405.3, applies when the actor holds a position of trust or authority over the victim, such as a teacher, coach, or caregiver, and extends protection to victims under 18 in those circumstances.
The specific charge filed in any given situation depends on the ages of both parties, the nature of the conduct, and whether any position of authority existed. An attorney must evaluate all of these factors together to assess the full scope of criminal exposure.
Romeo and Juliet Law Colorado
Colorado does not have a standalone Romeo and Juliet law. Instead, close-in-age exemptions are carved directly into the criminal statutes governing sexual offenses. The standard that applies depends on the age of the younger party.
For victims under 15 years of age, prosecution under C.R.S. § 18-3-405 requires that the actor be at least four years older than the victim. If the age difference is less than four years, the close-in-age exemption may apply.
For victims between 15 and 17 years of age, the actor must be at least ten years older than the victim for prosecution to proceed under the relevant statute. If the age difference is less than ten years, the exemption may apply.
These exemptions do not eliminate all criminal exposure in every close-in-age situation. They apply to specific charges and specific age combinations. They do not apply when an adult in a position of trust or authority is involved. They do not apply to conduct involving victims below certain age thresholds regardless of the age gap. And they do not automatically apply simply because the parties are close in age. An attorney must evaluate the specific ages and conduct to determine whether an exemption applies and whether other charges remain possible.
Is 18 and 17 Legal in Colorado? What About 18 and 16?
18 and 17. Because Colorado’s age of consent is 17, a sexual relationship between an 18-year-old and a 17-year-old is generally not illegal under Colorado law. The 17-year-old is at or above the age of consent. However if the 18-year-old holds a position of trust or authority over the 17-year-old, such as a teacher, coach, or guardian, the relationship may still be illegal under C.R.S. § 18-3-405.3, which protects victims under 18 from sexual contact by those in authority regardless of the victim’s age.
18 and 16. A 16-year-old cannot legally consent to sexual contact under Colorado law. Dating without sexual contact is not illegal. However sexual contact with a 16-year-old when the other party is 18 requires careful legal analysis. Under C.R.S. § 18-3-402(1)(e), the close-in-age exemption for victims aged 15 and 16 requires the actor to be at least ten years older than the victim for prosecution to proceed. Because the age difference between an 18-year-old and a 16-year-old is only two years, prosecution under that specific statute may not apply. However other charges may still be possible depending on the nature of the conduct and the specific circumstances. Anyone in this situation should consult a criminal defense attorney before the situation escalates to a law enforcement investigation.
Anyone uncertain about their legal exposure in a close-in-age situation involving a minor should consult a criminal defense attorney before the situation escalates to a law enforcement investigation.
Criminal Consequences of Age of Consent Violations in Colorado
Violations of Colorado’s age of consent laws carry serious consequences that extend far beyond any immediate sentence.
Felony charges. Sexual assault on a child under C.R.S. § 18-3-405 is a class 4 felony, but it becomes a class 3 felony when aggravating circumstances are present, such as the use of force, threats of serious bodily injury or death, or commission of the offense as part of a pattern of sexual abuse.
Sex offender registration. A conviction for a sexual offense involving a minor in Colorado typically requires registration as a sex offender under the Colorado Sex Offender Registration Act. Registration affects where you can live, where you can work, and what activities you can participate in, in many cases for life. For people who want to understand whether removal from the registry is possible after a conviction, whether you can get off the sex offender registry explains the removal process and the requirements that apply.
Lifetime supervision. Colorado imposes indeterminate sentencing for certain sex offenses, meaning a person convicted of a qualifying offense may be subject to lifetime supervision rather than a fixed sentence.
The severity of these consequences makes early legal representation essential. A Denver sexual assault defense attorney at Baker Law Group, PLLC can review the specific facts of any situation involving age of consent questions and advise on the applicable law, potential charges, and available defenses before any charges are filed or any statements are made to law enforcement.
What to Do If You Are Being Investigated or Charged
If you are under investigation or have been charged with a sexual offense related to age of consent in Colorado, the steps you take in the earliest stages significantly affect the outcome.
Do not speak to law enforcement without an attorney. Anything you say during an investigation, even if you believe it is exculpatory, can be used against you. Invoke your right to remain silent and your right to counsel before answering any questions.
Contact a criminal defense attorney immediately. Sexual offense investigations move quickly. Digital evidence, witness statements, and other materials are gathered in the early stages. An attorney who is involved early can preserve evidence that supports your defense and challenge evidence obtained improperly.
Do not contact the alleged victim or their family. Any contact after an investigation begins can be interpreted as witness tampering and result in additional charges. All communication must go through your attorney.
Understand that intent is not always a defense. Colorado’s sexual offense statutes do not require the prosecution to prove that the defendant knew the victim’s age in all circumstances. An attorney must evaluate whether this issue applies to your specific situation.
If you discover that a warrant has been issued before law enforcement has contacted you directly, what to do when there is a warrant for your arrest explains the immediate steps to take to protect your legal position.
A Denver criminal defense lawyer at Baker Law Group, PLLC handles sexual offense investigations and charges across Colorado and provides confidential legal counsel from the first contact through the resolution of the case.
A Sexual Offense Charge in Colorado Changes Everything. Act Immediately.
The consequences of a sexual offense conviction in Colorado are among the most severe in the criminal justice system. A charge does not mean a conviction, and the specific facts of every case determine what defenses are available and what outcomes are realistic. Protecting those options requires legal representation from the earliest possible moment.
Baker Law Group, PLLC represents Colorado residents facing sexual offense charges across the state. Our attorneys evaluate the specific facts of your case, identify every available defense, and give you a direct assessment of your options before you make any decision about how to proceed.
For Colorado Springs residents facing these charges, a Colorado Springs criminal defense lawyer at Baker Law Group, PLLC handles sexual offense defense through El Paso County District Court. For Fort Collins and Larimer County residents, a Fort Collins criminal defense lawyer at Baker Law Group handles these matters throughout Northern Colorado.
Contact Baker Law Group, PLLC today to schedule a confidential consultation and find out exactly what your legal options are.