There are two versions of the SIU logomark: the shadow inset and the highlight inset.
WHAT YOU NEED TO KNOW
ABOUT WHEN TO USE THE SIU LOGOMARK (WITHOUT WORDMARK)
The SIU logomark versions of the identity system should be used for internal / on campus communications only, in applications such as banners, signage, where it is universally understood what the abbreviation SIU stands for.
What you need to know
ABOUT WHICH INSET VERSION TO USE
SHADOW INSET VERSION: This version conveys prestige, subtlety, and refinement; it is closely aligned with the university brand expression. Use this version only on a white background. It is best used in printing on coated sheets, in a digital environment and on large-size embroidery. The minimum preferred width is 10 picas, except on institutional collateral (stationery, business cards).
HIGHLIGHT INSET VERSION: This version has higher impact, and it should be used when a bold depiction of the SIU brand is appropriate. It should also be used where the size is small, in print advertising, on the Web and in decorative applications. It is preferred for items seen at great distances.