Rubycon logo with dark italic serif text inside a yellow oval shape.
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Rubycon Corporation

Rubycon Corporation is a Japanese electronics manufacturer specializing in aluminum electrolytic capacitors, film capacitors and power supply units. It was founded in April 1952 in Ina City, Nagano Prefecture, and adopted the Rubycon trademark in April 1953.

Country: Japan

Industry: Electronics

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Rubycon Corporation is a Japanese electronics manufacturer specializing in aluminum electrolytic capacitors, film capacitors and power supply units. The company was founded in April 1952 in Ina City, Nagano Prefecture, and adopted the Rubycon trademark in April 1953, shortly after changing its corporate name from Nihon Denkai Seisakusho to Shin-ei Tsushin Kogyo.[1]

Design and History

The Rubycon wordmark is a horizontal lockup that pairs the company name in a clean, sans-serif style with a small graphic emblem. The mark is registered as a trademark in multiple jurisdictions, including Taiwan, where it was filed in 2013 as a plain (monochrome) mark.[2] A separate graphic-only trademark registration also exists for Rubycon Corporation, filed as a monochrome planar mark.[3]

The company changed its corporate name to Rubycon Corporation in December 1990, aligning the company name with the trademark that had been in use since 1953.[1] The wordmark itself has remained a consistent element of the brand across product packaging, datasheets and corporate communications.

Meaning and Symbolism

The Rubycon name derives from “ruby,” a reference to the red gemstone, and the company is widely known in Chinese-language markets as “红宝石” (hongbaoshi), meaning “ruby.”[4] The brand name is also commonly printed on the side of the company’s electrolytic capacitors, where it serves as a product identification mark.[4]

Typography and Design

The Rubycon wordmark uses a straightforward, unadorned sans-serif letterform. The company’s official SVG logo file, hosted on Wikimedia Commons, measures 463 by 120 pixels and presents the wordmark in a horizontal format.[5] No official documentation of specific brand colors, a custom typeface or a designer attribution for the current mark has been published by the company.

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 30/09/2026.

Colors

4 colors

  • #FDD100Gold, 80%

    RGB 253, 209, 0; CMYK 0, 17, 100, 1

    Black text 14.3:1 (passes AA)

  • #302A2BBlack, 15%

    RGB 48, 42, 43; CMYK 0, 13, 10, 81

    White text 14.1:1 (passes AA)

  • #C9A60BGold, 3.1%

    RGB 201, 166, 11; CMYK 0, 17, 95, 21

    Black text 8.9:1 (passes AA)

  • #6E5C1EGold, 2.1%

    RGB 110, 92, 30; CMYK 0, 16, 73, 57

    White text 6.5:1 (passes AA)

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Backgrounds and sizes

Contrast and color difference

Compared with Electronics

281 measured Electronics logos

Only 0% of Electronics logos in the archive use gold as the main color.

  • Main color gold0%
  • Wordmark57%
  • Four or more colors11%
  • Most common main color here: blue32%

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

Structure

Logo type
WordmarkClassified by AI
Proportions
4.3 : 1Horizontal
Ink coverage
79%21% empty space inside the outline
Symmetry
Mirror-symmetric91% left-right match
Outline
Free-formOverall silhouette
Complexity
Moderate2 shapes, about 414 points

Tints and shades

Click a step to copy

#FDD100

#C9A60B

Typography

Lettering style: Serif.

This is a style class, not the exact font. The font has not been documented.

Free fonts in this style: EB Garamond, Libre Caslon Text, Playfair Display

Visual description

Classified by AI

Style
Flat, minimal
Layout
Lettering on its own
Techniques
Badge
Text in the logo
Rubycon

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