National Dress in Blue Day

Celebrated on 03/06/2026

Quick Fact

National Dress in Blue Day, celebrated on March 4th, is a day dedicated to wearing blue to raise awareness about colorectal cancer. The color blue is associated with the Blue Star banner used by the Colon Cancer Alliance to represent hope and support for survivors. Over 150,000 people are diagnosed with colorectal cancer each year in the U.S., making this observance a vital part of cancer prevention efforts.

Origins and Establishment of National Dress in Blue Day

National Dress in Blue Day was established in 2009 by the Colon Cancer Alliance (now part of the Colorectal Cancer Alliance) to raise awareness for colorectal cancer. The date, March 4th, was chosen because it falls during Colorectal Cancer Awareness Month (March) and the phrase 'March 4th' can be interpreted as 'March Forth,' encouraging action. The first official celebration involved participants wearing blue and sharing information about screening and prevention.

Evolution and Modern Commemoration

Since its inception, National Dress in Blue Day has grown into a nationwide movement, with schools, businesses, and communities organizing blue-themed events, fundraisers, and educational campaigns. Social media plays a key role, with hashtags like #DressInBlue and #BlueDay spreading awareness. In recent years, landmarks have been lit in blue, and virtual events have expanded participation globally.

Facts & General Observations

• Colorectal cancer is the second leading cause of cancer death in the U.S., yet it is highly preventable with regular screening starting at age 45.
• Over 1.5 million survivors of colorectal cancer are alive in the U.S. today, thanks to early detection and improved treatments.
• The blue awareness ribbon for colorectal cancer was introduced in 2000, and National Dress in Blue Day helps reinforce its message.

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