The Seattle Seahawks have a 50 on their jerseys this season because they’re celebrating the franchise’s 50th anniversary, marking 50 seasons since the team’s inaugural year in 1976.

What the “50” Patch Actually Means

  • It’s a special commemorative patch for the Seahawks’ 50th season as an NFL franchise.
  • The number “50” highlights half a century of Seahawks football, from their founding in 1976 through the 2025–26 season.
  • The patch is worn on the upper left area of the jersey and is being used throughout their anniversary season, including big games like the NFC Championship and Super Bowl appearances.

Design Details on the Patch

The patch isn’t just a plain “50” — it’s full of subtle nods to team history:

  • Two shades of blue in the “50” reference both the original Royal Blue and the current uniform blue tones.
  • The text “EST 1976” appears on the patch to mark the year the Seahawks joined the NFL as an expansion team.
  • There are 12 feathers incorporated into the design, honoring the Seahawks’ fanbase known as the “12s” or “12th Man.”

Why You’re Seeing It Everywhere Right Now

  • The patch is being highlighted in national broadcasts during major games, so it’s become a trending talking point among fans and on forums.
  • Anniversary patches like this are typically worn for one full season only, so this “50” is tied specifically to the 50th-season celebration window and not a permanent jersey change.

So if you’re noticing that bold “50” on Seahawks jerseys and wondering if it’s for a player, a memorial, or something else — it’s their 50th season badge, celebrating five decades of Seahawks history and their connection with the 12s.

TL;DR: The Seahawks have a 50 on their jerseys to commemorate their 50th season in the NFL, with the patch design nodding to their 1976 founding, old and new team colors, and their “12s” fanbase.

Information gathered from public forums or data available on the internet and portrayed here.