Colorado opens its health insurance marketplace Tuesday after more than two years of planning.

Architects of Colorado health exchange hope it's a quiet first day.

Connect For Health Colorado and all state exchanges will be open for business Tuesday. It's the big test for Obamacare. Customers who need health insurance will be able to use the site to find out what their choices are, what their premiums will be and whether they qualify for subsidies to reduce their payments.

Colorado has 180 people working a call center in Colorado Springs to help customers through the process. There's no reason to rush - coverage doesn't start until January, and people without health insurance have until the end of the year to sign up.