Santen logo featuring a blue stylized S and lowercase lettering on a white background.
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Santen Pharmaceutical

Santen Pharmaceutical Co., Ltd. is a Japanese ophthalmology-focused pharmaceutical company founded in 1890 in Osaka. Its current corporate logo, built around the initial S, was introduced on July 4, 1992, the company's founding anniversary.

Santen Pharmaceutical Co., Ltd. is a Japanese ophthalmology-focused pharmaceutical company founded in 1890 in Osaka. Its current corporate logo, featuring a symbolic design built around the initial “S” from Santen, was introduced on July 4, 1992, the company’s founding anniversary. The logo marked the first time Santen used alphabetical notation, a decision made in recognition of the expansion of its corporate and business activities on a global scale.[1]

Design and History

The 1992 logo consists of two large “S” shapes stacked on top of each other. According to Santen’s official account, the design expresses the company’s commitment to cutting-edge technology and strong growth. The upward movement toward the right signifies the company’s dedication to “Tenki ni Sanyo Suru” (Exploring the secrets and mechanisms of nature in order to contribute to people’s health), which is both the source of the Santen company name and its core principle.[1]

The company name “Santen” traces back to 1890, when founder Kenkichi Taguchi opened a private firm called Taguchi Santendo. Taguchi borrowed the Chinese characters “参” (San) and “天” (Ten) from a passage in a Chinese philosophical classic. The name has remained unchanged for more than 130 years.[1]

Meaning and Symbolism

The logo uses two shades of blue, officially named SANTEN BLUE and SANTEN DEEP BLUE. The lighter, fresher SANTEN BLUE serves as the corporate color and signifies the company’s commitment to providing clean, high-quality products.[1]

The stacked “S” design also carries a directional meaning: the movement pointing upward to the right toward the sky (“ten” in Japanese) reflects the origin of the company name and its founding philosophy of contributing to people’s health by exploring the secrets of nature.[1]

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Logo data

Measured from the original SVG file on 30/09/2026.

Colors

2 colors

  • #004098Blue, 83%

    RGB 0, 64, 152; CMYK 100, 58, 0, 40

    White text 9.6:1 (passes AA)

  • #00A1E9Blue, 17%

    RGB 0, 161, 233; CMYK 100, 31, 0, 9

    Black text 7.3:1 (passes AA)

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Backgrounds and sizes

Contrast and color difference

Compared with Pharmaceuticals

75 measured Pharmaceuticals logos

  • Main color blue44%
  • Wordmark32%
  • 2 colors25%

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

Structure

Logo type
WordmarkClassified by AI
Proportions
2.6 : 1Horizontal
Ink coverage
47%53% empty space inside the outline
Symmetry
Asymmetric40% left-right match
Outline
Free-formOverall silhouette
Complexity
Moderate9 shapes, about 246 points

Tints and shades

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#004098

#00A1E9

Typography

  • ArialMT declared in the SVG file

Lettering style: Geometric sans.

Free fonts in this style: Montserrat, Outfit, Urbanist

Visual description

Classified by AI

Style
Geometric, flat, minimal
Layout
Lettering on its own
Techniques
Letter used as symbol, geometric construction
Text in the logo
Santen

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