Western Illinois Leathernecks logo showing a yellow bulldog head with purple outline and spiked collar.
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Western Illinois Leathernecks

Western Illinois University's athletic teams compete as the Leathernecks, a nickname derived from the U.S. Marine Corps. The university, in Macomb, Illinois, uses purple and gold as its official colors and bases its athletics branding on Rocky the Bulldog.

Western Illinois University’s athletic teams compete as the Leathernecks, a nickname derived from the U.S. Marine Corps. The university is the only non-military institution officially permitted to use the Marine Corps’ nickname, seal and bulldog mascot, a distinction granted in 1927 when athletic director and coach Ray “Rock” Hanson, a Marine veteran of World War I, obtained permission from the U.S. Navy.[1] The athletics program uses purple and gold as its official colors, specified as PMS 2607 and PMS 116.[2]

Design and History

The central figure in Western Illinois athletics branding is Rocky the Bulldog, the costumed mascot whose lineage traces to a live English bulldog named “Colonel Rock” that first appeared at a homecoming football game in 1959. The name was chosen from over 200 contest entries to honor Hanson.[3] The costumed Rocky replaced the live dog in 1973 and received a significant visual update, or “grooming,” unveiled at a basketball game on February 15, 1997.[3]

The current primary athletics logo features a side view of the Rocky bulldog head above the wordmark “WESTERN ILLINOIS UNIVERSITY,” with the “LEATHERNECKS” name set below.[4] In 2019, Western Illinois revised the typeface used for its wordmarks while retaining the same Rocky bulldog graphic.[5] The university maintains two sanctioned Rocky logo forms: the full-body mascot and the Rocky head, with the head usable alone when “Western Illinois” appears prominently elsewhere in a piece.[6]

University policy designates the bell tower logo and the “Western Illinois (Rocky) sweep” as the official marks for all academic and administrative units, while the athletics department uses the Rocky-based marks with the Leathernecks wordmark.[7] In April 2024, the university issued an April Fools’ announcement confirming it would not change its logo or mascot, reaffirming the Leathernecks identity.[8]

Meaning and Symbolism

The Leathernecks name references the leather collar historically worn by U.S. Marines, and the bulldog serves as the traditional mascot of the Marine Corps.[9] The university’s use of these symbols stems directly from Hanson’s military service and his effort to build an athletics tradition around the Marine ethic.[1] In June 2009, the university unified its women’s teams under the Leathernecks name, ending the previous “Westerwinds” designation for female athletes.[1]

Typography and Design

University brand guidelines specify that logos may be printed only in university purple (Pantone 2607) and gold (Pantone 116) or in black on non-color pieces, and that Rocky’s teeth and the whites of his eyes must remain white.[6] Rocky head logos must carry a trademark designation, and the logos may not be manipulated or altered in any way.[10]

Logo Index is an independent educational archive covering logos, visual identities and graphic design history. All trademarks and brand assets remain the property of their respective owners.

Logo data

Measured from the original SVG file on 01/10/2026.

Colors

6 colors

  • #FFCC00Yellow, 52%

    RGB 255, 204, 0; CMYK 0, 20, 100, 0

    Black text 13.9:1 (passes AA)

  • #663399Purple, 34%

    RGB 102, 51, 153; CMYK 33, 67, 0, 40

    White text 8.4:1 (passes AA)

  • #FFFFFFWhite, 9.2%

    RGB 255, 255, 255; CMYK 0, 0, 0, 0

    Black text 21.0:1 (passes AA)

  • #75428APurple, 2.3%

    RGB 117, 66, 138; CMYK 15, 52, 0, 46

    White text 7.2:1 (passes AA)

  • #BAA3D1Purple, 2.1%

    RGB 186, 163, 209; CMYK 11, 22, 0, 18

    Black text 9.2:1 (passes AA)

  • #AC7953Orange, 1.1%

    RGB 172, 121, 83; CMYK 0, 30, 52, 33

    Black text 5.6:1 (passes AA)

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Backgrounds and sizes

Contrast and color difference

Compared with Sports

2,708 measured Sports logos

Only 5% of Sports logos in the archive use yellow as the main color.

  • Main color yellow5%
  • Mascot7%
  • Four or more colors85%
  • Most common main color here: blue26%

From measured files, not tags. Updated 28/10/2026.

Structure

Logo type
MascotClassified by AI
Proportions
1.1 : 1Roughly square
Ink coverage
73%27% empty space inside the outline
Symmetry
Nearly symmetric81% left-right match
Outline
CircularOverall silhouette
Complexity
Detailed5 shapes, about 1,477 points

Tints and shades

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#FFCC00

#663399

Visual description

Classified by AI

Symbol shows
Bulldog head with collar
Style
Flat, playful, detailed
Layout
Symbol on its own
Techniques
Mascot

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