SIU Primary and Secondary Color Use

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Last Updated: Sep 19, 2025, 10:09 AM

Primary Color Palette

The primary Pantone® colors for the Southern Illinois University identity system are Pantone® 209C and PMS Black. Four-color formulas and web colors are provided here as well.

Please contact University Communications and Marketing at 618-453-6183 for acceptable equivalents to print on fabric.

  • SIU Maroon

    Pantone® 209C
    C: 0
    M: 98
    Y: 30
    K: 74

    R: 108
    G: 6
    B: 51

    Web-safe #6c0633

    Thread color:
    Madeira 1035

  • Black

    Rich Black
    C: 63
    M: 52
    Y: 50
    K: 95

    R: 0
    G: 0
    B: 0

    Web-safe #171717

    Thread color:
    Black

Secondary Color Palette

  • SIU Oyster

    Pantone® Cool Grey 2

    CMYK: 0, .8, 4, 20.5

    RGB: 224, 221, 215

    Web Safe: #e0ddd7

  • SIU Sand

    Pantone® Warm Grey 1

    CMYK: 14, 11, 18, 0

    RGB: 237, 229, 218

    Web Safe: #ede5da

  • SIU Grey

    Pantone® Cool Grey 10

    CMYK: 6.2, 3.2, 0, 85.3

    RGB: 53, 51, 52

    Web Safe: #353334

  • SIU Ocean

    Pantone® 3025

    CMYK: 100, 13, 0, 65

    RGB: 0, 83, 112

    Web Safe: #005370

  • SIU Brown

    Pantone® 7505

    CMYK: 43, 51, 76, 22

    RGB: 129, 96, 64

    Web Safe: #7d5a3e

  • SIU Mustard

    Pantone® 1245

    CMYK: 0, 23, 97, 20

    RGB: 210, 164, 22

    Web Safe: #d2a416