If you contribute to your 401(k) account, you may still contribute to a Roth IRA and/or a Traditional IRA; however, your participation in the 401(k) plan may affect your ability to take a tax deduction for any Traditional IRA contributions. It will not affect the amount you are able to contribute. (To learn more, see Are You an Active Participant? and Traditional IRA Deductibility Limits.)
Your 401(k) contribution has no effect on your Roth IRA contributions. You only need to ensure you meet the eligibility requirements for funding a Roth IRA. (For more on this, see Roth IRA: Back To Basics.)
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