The Seattle Mariners carry five uniforms in 2026, and this is the most interesting their closet has looked in years. The brand-new piece is a black-and-cream Seattle Steelheads throwback that takes over Sundays, while the rush-blue "Seattle" City Connect from 2023 keeps its Friday night slot for a fourth season. Under MLB's "4+1" framework, that leaves the whites, the road navy, and the Northwest green alternate to do the rest. Here's the full Mariners wardrobe for 2026 and when each jersey actually comes out.
Want them graded instead? Here is every Seattle Mariners jersey ranked, worst to best.
Live 2026 Tracker
See every jersey the Mariners have actually worn this season, day by day.
Open the Mariners uniform calendar →Want to see whether the Mariners stuck to the plan? Our MLB daily uniform tracker records every jersey worn league-wide each night, and the full 2026 MLB uniform schedule guide covers how all 30 clubs run their rotations.
Sample Home-and-Road Week at a Glance
A couple of honest caveats the grid can't show: the Northwest green alternate isn't strictly a Saturday-only look — it also travels, surfacing on the road when the home team wears navy or black. And the weekend home assignments (City Connect Friday, green Saturday, Steelheads Sunday) are habits, not a published mandate, so treat the week above as a representative homestand rather than a guarantee.
The big story for 2026 is turnover on Sundays. Seattle is retiring the cream Sunday alternate it had worn for roughly a decade and replacing it with a Seattle Steelheads tribute. The City Connect, the rush-blue top with black pants that debuted in 2023, is still in the rotation for 2026. The whites, the road navy, and the Northwest green carry over largely as-is, still anchored by the navy, Northwest green, and silver palette the franchise adopted back in 1993.
Home Whites (Most Home Games)
The home white is the cornerstone: a clean white jersey with "Mariners" arched across the chest in navy, trimmed in Northwest green and silver, paired with the navy cap carrying the ball-and-compass-rose "S." It's the default for the bulk of every homestand — essentially any home game not claimed by the City Connect, the green, or the Steelheads weekend looks. There's nothing flashy here, and that's the point: the compass-rose identity is one of the more handsome marks in the American League, and the whites let it sit front and center without competition. Timeless does not need tinkering.
Shop the Mariners white jersey at Fanatics
Road Navy (Most Away Games)
This is the one newcomers to the franchise tend to get wrong. The Mariners no longer wear gray on the road — they dropped grays after 2022 and made navy their primary road jersey for 2023, a move nudged along by MLB's uniform rules at the time. The navy top reads "Seattle" across the chest in silver and Northwest green, worn with the same navy compass cap, and it's the default for most away games. It gives Seattle one of the darker, moodier road looks in the league, which suits a team whose whole identity is built around deep navy and saltwater green. It's the workhorse of the away schedule.
Shop the Mariners navy jersey at Fanatics
Northwest Green Alternate (Saturday Home Games + Select Road)
The Northwest green — the saltwater teal that's been part of the Mariners' DNA since the 1993 rebrand — is the splash of color in the rotation. It's a green jersey with "Mariners" across the chest in silver with navy trim, and it pulls double duty: it owns select Saturday home games, and it also travels, coming out on the road when the home club is wearing navy or black and Seattle wants the contrast. That flexibility is exactly why it doesn't lock neatly into a single day on the grid. It's the most distinctly Seattle color the team owns, and giving it both a home slot and a road job keeps it in regular circulation.
Shop the Mariners green alternate jersey at Fanatics
Steelheads Sunday — The New Black-and-Cream Throwback (Sunday Home Games)
This is the headline addition. For 2026 the Mariners introduce a black-and-cream uniform modeled on the Seattle Steelheads, the city's Negro leagues club that played in 1946, and it takes over Sunday home games as part of "Steelheads Sundays" at T-Mobile Park. It replaces the cream Sunday alternate Seattle had worn for years. It's a meaningful piece of design history, too: the move makes the Mariners the first MLB club to fold a Negro leagues uniform into its regular-season rotation rather than wearing one only for a single tribute game. Handing it a standing weekly slot — every Sunday at home — is what separates this from a one-off, and it's the rare alternate that's as much civic history lesson as it is a jersey.
Shop the Mariners throwback jersey at Fanatics
City Connect: The Rush-Blue "Seattle" Kit (Friday Home Games)
The Mariners' City Connect debuted on Friday, May 5, 2023 against the Astros, and it is still the one they wear in 2026. It is a rush-blue kit built around Pacific Northwest and Seattle baseball history. "Seattle" arches across the chest in lettering inspired by the Seattle Pilots, the city's original 1969 MLB team, beveled in Amarillo and Sundown gold with a black drop shadow. The black pants are a tribute to the 1940s Seattle Steelheads, the cap carries the trident logo from the franchise's early years, and the sleeve wears a Mount Rainier "PNW" patch. The details are where it earns its stripes: "Sodo Mojo" stitched inside the collar and "My Oh My," Dave Niehaus's signature call, at the jock tag. It's layered without getting cluttered, and it slots into Friday home games. Tying the loudest, most place-specific jersey in the closet to a fixed weekly night is smart: fans know exactly when to come see it.
Shop the Mariners City Connect jersey at Fanatics
What Happened to the Cream Sunday Uniform?
Retired. The cream alternate that owned Sundays for about a decade was phased out to make room for the Steelheads throwback. If you're looking for the old Sunday creams in 2026, you won't find them on the field — their Sunday role now belongs entirely to the black-and-cream Steelheads look, which keeps a warm, vintage tone in the rotation while attaching it to a far richer local story.
How the Mariners Rotation Actually Works
Let's be straight about it: Seattle runs a looser system than the truly scheduled clubs. The Astros and a team like the Phillies treat their closets like a published timetable; the Mariners really only have a handful of soft anchors — City Connect on Friday home games, Northwest green on Saturday home games, and the Steelheads throwback on Sunday home games. Everything else is the default: home whites for the rest of the homestand, road navy for most of the trip, with the green also free to travel when the matchup calls for it.
It still works, because the anchors cover the jerseys fans actually plan around. The City Connect and the Steelheads tribute are the looks people buy tickets and merch for, so giving each one a standing weekend night builds anticipation even without a rigid weekday-by-weekday script. The whites and the road navy are perfectly content to handle the quiet work in between.
One more constant worth noting: since 2025 the Mariners have carried a Nintendo advertising patch on the sleeve, a fitting partnership for a franchise headquartered in the same Pacific Northwest backyard as the gaming giant's American arm.
Frequently Asked Questions
What jersey are the Seattle Mariners wearing today?
It depends on the day and whether they are home or away. At home, the soft anchors are the rush-blue City Connect on Friday, the Northwest green alternate on Saturday, and the new black-and-cream Steelheads throwback on Sunday, with the home whites covering the rest of the homestand. On the road the default is the navy "Seattle" jersey, with the Northwest green free to travel when the home team wears navy or black. Check the day of week and whether Seattle is at home or away, and the weekend anchors will usually tell you the rest.
What jersey did the Mariners wear last night?
Seattle stacks its anchors on the weekend at home: Friday night was the rush-blue City Connect, Saturday was the Northwest green alternate, and Sunday was the black-and-cream Steelheads throwback. Any other home night was the home whites. On the road the default is the navy "Seattle" jersey, with the Northwest green free to travel when the home team wears navy or black.
For the uniform we logged in their most recent game, see the Mariners uniform tracker, which we update every morning.
What uniform are the Mariners wearing tonight?
At T-Mobile Park: Friday is the rush-blue City Connect, Saturday is the Northwest green, Sunday is the Steelheads throwback, and the home whites cover the rest of the homestand. On the road expect the navy "Seattle" jersey, or the green if the home team is in navy or black.
What are the Mariners wearing tomorrow?
The weekend anchors do most of the work: Friday City Connect, Saturday Northwest green, Sunday Steelheads. Weekday home games are the whites. On the road it is navy, since the Mariners no longer wear gray road uniforms.
How many uniforms do the Mariners have in 2026?
Five: the home white, the road navy, the Northwest green alternate, the new Steelheads Sunday throwback, and the rush-blue City Connect. That fits MLB's "4+1" structure: four standard uniforms plus the City Connect. The Steelheads look is the new piece for 2026; the City Connect is the same set Seattle has worn since 2023.
Why don't the Mariners wear gray road uniforms anymore?
Seattle dropped its road grays after the 2022 season and made navy its primary road jersey for 2023. The navy top reads "Seattle" across the chest and is now the team's default look for most away games.
What is the new Steelheads uniform?
It's a black-and-cream throwback honoring the Seattle Steelheads, the city's 1946 Negro leagues club. It replaces the old cream Sunday alternate and is worn for Sunday home games as part of "Steelheads Sundays." It also makes Seattle the first MLB team to put a Negro leagues uniform in its regular rotation.
Did the Mariners change their City Connect for 2026?
No. The rush-blue City Connect with the Pilots-inspired "Seattle" lettering, black pants, trident cap, and "Sodo Mojo" and "My Oh My" details is the same set that debuted in 2023, and it is still worn for Friday home games in 2026. The uniform that changed this year was the Sunday alternate, where the Steelheads throwback replaced the cream.
What City Connect jerseys have the Mariners had?
Just one so far. Seattle's City Connect was unveiled in late April 2023 and first worn on Friday, May 5, 2023 against the Astros: a rush-blue jersey with "Seattle" in Pilots-inspired gold lettering, black pants for the Steelheads, and a trident cap. It has been worn every season from 2023 through 2026 and has not been retired or replaced.
When do the Mariners wear the Northwest green jerseys?
The green alternate is worn for select Saturday home games and also on the road when the home team is in navy or black. It's the team's signature saltwater teal and the boldest color in the closet.
What do the Mariners wear on the chest at home versus on the road?
At home the white jersey reads "Mariners" in navy; on the road the navy jersey reads "Seattle." The Northwest green alternate also says "Mariners," while both the City Connect and Steelheads looks carry "Seattle"-style script tied to the city's earlier ballclubs.
The rest of the AL West
Every division rival's jersey calendar for 2026.
Houston Astros 2026 Uniform ScheduleLos Angeles Angels 2026 Uniform ScheduleAthletics 2026 Uniform ScheduleTexas Rangers 2026 Uniform ScheduleAll 30 teams · the 2026 MLB Uniform Schedule →Why are the Mariners wearing a number 4 patch?
That is Lou Gehrig Day. On Tuesday, June 2, 2026, the Mariners and every other MLB club wore a custom No. 4 decal for Gehrig's retired Yankees number, along with red "4-ALS" wristbands, to raise awareness in the fight against ALS. June 2 marks both the day Gehrig became the Yankees' starting first baseman in 1925 and the day he died in 1941.
Why are the Mariners wearing blue and yellow?
That is the City Connect, a rush-blue kit with "Seattle" in lettering inspired by the 1969 Seattle Pilots and accents in Amarillo and Sundown gold, including a Mount Rainier "PNW" sleeve patch. It debuted in 2023, and the Mariners wear it for Friday home games at T-Mobile Park.
More MLB Coverage
- Houston Astros 2026 Uniform Schedule — the AL West rival and a far more scheduled rotation
- Los Angeles Angels 2026 Uniform Schedule — the division's red-and-white closet, broken down
- Athletics 2026 Uniform Schedule — the AL West's other set, in its new chapter
- Los Angeles Dodgers 2026 Uniform Schedule — the gold standard of clean home-and-road simplicity
Uniform details compiled from team and league sources. ColorWay Sports is an independent design site and is not affiliated with, endorsed by, or sponsored by the Seattle Mariners or Major League Baseball.
