Thank you @TML99 for the initial thread and thanks to @sve7en & @Carpy48 for the updates.

SHL Team Colors
(primary, secondary, alt 1, alt 2)

SHL EAST
 ATLANTA INFERNO: #be2e1d (Thunderbird), #f26522 (Flamingo), #ffdd00 (School Bus Yellow)
BALTIMORE PLATOON: #08102c (Black Pearl), #6c1616 (Cherrywood)
BUFFALO STAMPERE: #164833 (Green Pea), #f9bb13 (Sun)
HAMILTON STEELHAWKS: #3e7098 (San Marino), #253b50 (Rhino), #d1d3d4 (Iron), #d1b236 (Old Gold)
 MANHATTAN RAGE: #97181b (Tamarillo), #000000 (black)
MONTREAL PATRIOTES: #773141 (Solid Pink), #ffb612 (My Sin), #b0bac4 (Cadet Blue)
NEW ENGLAND WOLFPACK: #006a36 (Fun Green), #717276 (Storm Gray)
PHILADELPHIA FORGE: #e88900 (Tangerine), #a00400 (Sangria), #212020 (Mine Shaft)
TAMPA BAY BARRACUDA: #000000 (Black), #f499c2 (Illusion), #0ad2d2 (Bright Turquoise), #ffffff (White)
TORONTO NORTH STARS: #195aa5 (Fun Blue), #ffffff (White)

SHL WEST
CALGARY DRAGONS: #a40000 (Bright Red), #797979 (Boulder), #ffffff (White), #000000 (Black)
CHICAGO SYNDICATE: #d9ad00 (Corn), #000000 (Black)
EDMONTON BLIZZARD: #091e40 (Downriver), #33c2ef (Picton Blue), #f5d606 (Gold)
LOS ANGELES PANTHERS: #006b7a (Blue Lagoon), #eb7d0b (Christine)
MINNESOTA MONARCHS: #11582c (Jewel), #ead9a2 (Double Colonial White), #453c7e (East Bay), #eae1e1 (Ebb)
NEW ORLEANS SPECTERS: #8623ea (Electric Violet), #000000 (Black), #eeeeee (Gallery)
SAN FRANCISCO PRIDE: #360854 (Clairvoyant), #d4af37 (Old Gold)
 SEATTLE ARGONAUTS: #192e58 / 1d3565 (Biscay - darker/lighter), #c5942c (Marigold), #7d92ab (Bali Hai), #d1d1d2 (Iron)
TEXAS RENEGADES: #000000 (black), #616161 (Dove Gray)
WINNIPEG AURORA: #0e2e2d (Firefly), #2ef9b4 (Bright Turquoise), #1fc4bd (Java), #c8c6c6 (Silver)

SMJHL Team Colors

SMJHL EAST:
CAROLINA KRAKEN: #cf5b00 (Tenn), #1a1a1a (Cod Gray), #f5ece7 (Dawn Pink)
DETROIT FALCONS: #ec2227 (Alizarin Crimson), #ffffff (White), #fbac3e (Yellow Orange), #d3d3d3 (Alto)
MAINE TIMBER: #082a17 (Bottle Green), #85714d (Shadow), #095f30 (Zuccini)
NEWFOUNDLAND BERSERKERS: #4d4d4d (Tundora), #ff0000 (Red), #cccccc (Silver)
 OTTAWA HIGHLANDERS: #025d58 (Blue Stone), #023284 (Resolution Blue), #832929 (Burnt Umber)
QUEBEC CITY CITADELLES: #34476b (San Juan), #1d9bee (Dodger Blue), #ec2e61 (Amaranth), #d5d5d5 (Alto)
ST. LOUIS SCARECROWS: #eaaa00 (Web Orange), #660000 (Lonestar), #cdaf95 (Sorrell Brown), #000000 (Black)

SMJHL WEST:
ANCHORAGE ARMADA: #848482 (Friar Grey), #1e2d40 (Cloud Burst), #7ea1d9 (Chetwode Blue), #fbb117 (Sun)
COLORADO RAPTORS: #182d49 (Big Stone), #33599f (Azure), #f3cd16 (Ripe Lemon)
GREAT FALLS GRIZZLIES: #b6985a (Muddy Waters), #936b48 (Cape Palliser), #151211 (Cod Gray), #ffffff (White)
KELOWNA KNIGHTS: #003300 (Deep Fir), #e5d478 (Chenin)
NEVADA BATTLEBORN: #06152f (Black Pearl), #0d244d (Downriver), #c6b273 (Laser), #dce2de (Tasman)
 SAN DIEGO TIDAL: #f0661d (Tango), #25b6b3 (Java), #0d1927 (Firefly)
 THUNDER BAY WALLEYE: #2f0038 (Mardi Gras), #fbbc19 (Lightning Yellow), #d4780d (Meteor), #ffffff(White)
VANCOUVER WHALERS: #018241 (Fun Green), #0d1d3f (Blue Zodiac)
YUKON MALAMUTES: #b1162c (Cardinal), #00a6f7 (Azure Radiance), #366e9b (Calypso), #ebebeb (Gallery)

Definitions by Name That Color


Historic teams (incomplete)
SEATTLE RIOT: #2b3856, #40e0d0
HALIFAX RAIDERS: #000000, #ead0ae
MONTREAL MILITIA: #041a54, #858685
 LETHBRIDGE LIONS: #fadc28, #000000, #ca0c00
MINNESOTA CHIEFS: #003300, #990000
WINNIPEG JETS: #081c41, #d10923
ANAHEIM OUTLAWS: #000000, #9e0404, #c20000
REGINA ELK: #2f0038 (Mardi Gras), #fbbc19 (Lightning Yellow), #d4780d (Meteor), #ffffff(White)