The Mariners quietly run one of the most cohesive closets in baseball, built almost entirely around deep navy and Pacific Northwest green, with no road grays anywhere in sight. For 2026 they added a black-and-cream Steelheads throwback with real weight behind it and kept the 2023 City Connect for a fourth season, but the crown still belongs to the color that has defined the franchise for three decades. Here is every Seattle Mariners jersey and uniform for 2026, ranked worst to first and graded.
Looking for dates? Here is the full 2026 Seattle Mariners uniform schedule, with every jersey and when it is worn.
5. Road Navy
The road navy is the workhorse, and it is the piece that trips up anyone new to the franchise: the Mariners dropped grays after 2022 and made navy their primary road jersey, so "Seattle" in silver and Northwest green on a navy base is what you see in most away games. It gives Seattle one of the darker, moodier road looks in the league, and it fits a team whose entire identity is built on deep navy and saltwater green.
It grades a B+ on the strength of that cohesive palette, this is one of the better plain road jerseys in baseball, not a filler gray. It lands at No. 5 only because everything above it brings more color or more story. As far as workhorses go, though, this is a genuinely good one.
4. Steelheads Sunday Throwback
The 2026 headliner is a black-and-cream uniform modeled on the Seattle Steelheads, the city's 1946 Negro leagues club, worn every Sunday home game as part of "Steelheads Sundays." The significance is enormous: it is the first time an MLB team has folded a Negro leagues uniform into its regular-season rotation rather than wearing one for a single tribute game, and the club paired it with a $500,000 commitment to local Black-led baseball. That part is an easy A+.
The jersey itself we grade a B+. The warm cream and clean black make a handsome, vintage combination, and it is a genuinely good-looking uniform, it just sits a step behind Seattle's brighter, more distinctive sets as a pure look. Meaningful, sharp, and exactly the kind of alternate that deserves a standing weekly slot, even if it is not quite the best-dressed thing in the closet.
3. Home Whites
The home white is the cornerstone: a clean white jersey with "Mariners" arched across the chest in navy, trimmed in Northwest green and silver, under the navy cap with the ball-and-compass-rose "S." There is nothing flashy about it, and that is exactly why it works. The compass-rose identity is one of the sharper marks in the American League, and the whites let it sit front and center with nothing competing for attention.
It grades an A- as the textbook version of a home uniform, timeless, balanced, and instantly Seattle. The only reason it is not higher is that the two looks ahead of it bring more color and more punch. A great home white is supposed to be the steady one, and this is a very good one.
2. City Connect (Rush-Blue)
The City Connect is the same royal blue set Seattle debuted on May 5, 2023, and it is still the one the Mariners wear in 2026. The club said in January 2026 that a new City Connect is on the way, but it has not arrived yet, so this is the original. It is basically a love letter to Seattle baseball history. "Seattle" runs across the chest in gold lettering pulled from the 1969 Pilots with a black drop shadow nodding to the 1955 Rainiers, the black pants tip a cap to the 1940s Steelheads, the cap wears the old trident, and there is a Mount Rainier "PNW" sleeve patch plus "Sodo Mojo" and Dave Niehaus's "My Oh My" stitched inside.
That is a lot of references, and the reason it grades an A is that it stacks all of them without ever looking cluttered. Every nod means something specific to Seattle, the royal blue and gold palette still looks sharp four seasons in, and it manages to feel modern and deeply local at once. This is one of the best City Connects in the league, and whatever replaces it has a high bar to clear.
1. Northwest Green Alternate
The Northwest green is the crown jewel. It is the saltwater teal that has been in the Mariners' DNA since the 1993 rebrand, "Mariners" across the chest in silver with navy trim, and it is the single most distinctly Seattle color anyone owns in sports. It pulls double duty too, owning select Saturday home games and traveling as the contrast look on the road, so it stays in heavy circulation instead of getting buried as a once-a-month alternate.
It grades an A+, the best jersey in the closet and one of the best alternates in all of baseball. The green is unique in the league, tied to the franchise's best years, and it photographs like nothing else under the T-Mobile Park lights. When the Mariners want to look their absolute best, this is what they reach for, and they are right to.
The Bottom Line
Seattle's 2026 set is deep and genuinely cohesive, and it is topped by one of the great alternates in the sport: the Northwest green is the crown jewel, with the excellent 2023 City Connect right behind it, then the timeless home white, the meaningful Steelheads Sunday throwback, and the moody navy backbone. There is not a weak jersey in the rotation, and the green remains the reason the Mariners are one of the best-dressed teams in baseball.
Frequently Asked Questions
How many uniforms do the Mariners have in 2026?
Five: the home whites, the road navy, the Northwest green alternate, the black-and-cream Steelheads Sunday throwback, and the royal blue City Connect that debuted in 2023.
Do the Mariners wear gray road uniforms?
No. Seattle dropped grays after 2022 and made navy its primary road jersey starting in 2023, so the Mariners are one of the few teams with no gray in the rotation at all.
When do the Mariners wear the Steelheads uniform?
Every Sunday home game at T-Mobile Park, as part of "Steelheads Sundays," honoring the 1946 Seattle Steelheads of the Negro leagues. It replaced the cream Sunday alternate the team wore for years.
What is the best Mariners jersey for 2026?
We rank the Northwest green alternate No. 1 with an A+. It is the saltwater teal that has defined the franchise since 1993, the most distinctly Seattle color in sports, and one of the best alternates in all of baseball. The 2023 City Connect, still in the rotation for a fourth season, is a close second at an A.
Did the Mariners get a new City Connect in 2026?
No. Seattle announced in January 2026 that a new City Connect is coming, but through the 2026 season the Mariners have worn the original 2023 set: the royal blue jersey with gold Pilots-style "Seattle" lettering, black pants for the Steelheads, the trident cap, the PNW sleeve patch, and "Sodo Mojo" and "My Oh My" details. It is the Friday home game look at T-Mobile Park.
