The Marge Williams Center has adopted a new brand identity as the organization celebrates its 15th anniversary this month.

The logo, designed by Bainbridge Island artist Alex Sanso, includes a stylized rose and centerpiece heart, set against a barn-red background with the motto “Nurturing nonprofits since 2001.”

The logo can be truncated to a single icon reading simply, “the Marge,” a shorthand name by which the center is often referred.

Kassia Sing, Marge Williams Center board president, said the organization wanted a strong new brand to mark the anniversary and raise the nonprofit center’s community profile.

“Alex really captured what the Marge Williams Center is all about,” Sing said. “We couldn’t be happier with her work, and we’re thrilled to be unveiling it.”

Sanso said the iconography was chosen to reflect Williams’ love of rose gardening and the nonprofit center’s place at “the heart of the community.” The color scheme reflects the building’s traditional barn-red facade.

Before moving to Bainbridge in 2007, most of Sanso’s clients were based somewhere else in the country, or elsewhere on the globe. Over the last several years, she has worked on projects for many Bainbridge-based companies and nonprofits.

“It’s very satisfying to work with clients right where I live and see the impact that my work can have on their growth and development,” Sanso said. “Working on this project for the Marge Williams Center is quite special, knowing its rich history and how invaluable it is to the many communities it serves through its tenants. I’m honored to have been approached for this project.”

The center was established in 2001 to honor the life of Marge Williams, a former Winslow town council member and longtime downtown booster who died in 1998.

Williams owned the Winslow Way building and lived in an upstairs apartment there, renting the ground floor to the Bainbridge Island Review for many years prior to her death.

A community group raised funds to purchase the building from Williams’ estate and create a nonprofit center. The refurbished building was dedicated in May 2001, and has provided low-cost office space for many nonprofit organizations since that time.

Since opening its doors, the Marge has provided a home to nonprofits that have served thousands of residents and offered an incubator space which allowed agencies and nonprofits to thrive and grow: Housing Resources Board, Bainbridge Community Foundation and Bainbridge Island Land Trust have all called the Marge home.

The center, at 221 Winslow Way West, will host a community open house at 1 p.m. Saturday, May 21, to formally unveil the new logo.

For information, see www.facebook.com/mwcbainbridge.