bgC3 Logo
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bgC3

bgC3 was a research and think tank company founded by Bill Gates in 2008 and headquartered in Kirkland, Washington. It was renamed Gates Ventures in 2018, when the logo was retired.

bgC3 was a research and think tank company founded by Microsoft founder Bill Gates in 2008. The company was created in March 2008 under the name Carillon Holdings and was renamed bgC3 in July of that year, shortly after Gates stepped down from his full-time role at Microsoft [1]. It was later renamed Gates Ventures in 2018 [2].

Design and History

The bgC3 logo first appeared on the company’s single-page website, bgc3.com, which was registered anonymously in June 2008 [3]. Contemporary reports described the mark as a stylized letter C in black coupled with the number 3 in aquamarine [3]. Other observers described the logo as resembling a magnet attached to a rounded blue rectangle, or upon closer inspection, a letter C interlocked with the number 3 [4].

The company’s name was widely reported to stand for “Bill Gates Catalyst 3,” with the number three referring to this being Gates’ third venture following Microsoft and the Bill & Melinda Gates Foundation [5]. The trademark application for the name and logo was filed on September 29, 2008, listing the company as a provider of “think tank services” for the computer hardware and software industries [3].

Public documents described bgC3 as a “think tank” rather than a commercial venture, intended to coordinate Gates’ work on his business and philanthropic endeavors [1]. The company was headquartered in Kirkland, Washington, near Gates’ home [5].

Meaning and Symbolism

The visual pun in the bgC3 logo, where the letter C is interlocked with the number 3 to form a “C3” reading, directly echoed the company’s name [4]. The magnet-like appearance noted by some observers was not documented as an intentional design element by the company or its designer.

No designer or agency attribution for the bgC3 logo has been publicly documented. The identity was retired when the company was renamed Gates Ventures in 2018 [2].

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

2 colors

  • #A2CBC7Teal, 61%

    RGB 162, 203, 199; CMYK 20, 0, 2, 20

    Black text 11.9:1 (passes AA)

  • #4D443FGrey, 39%

    RGB 77, 68, 63; CMYK 0, 12, 18, 70

    White text 9.5:1 (passes AA)

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Backgrounds and sizes

Contrast and color difference

Compared with Technology

455 measured Technology logos

Only 2% of Technology logos in the archive are lettermarks.

  • Main color teal4%
  • Lettermark2%
  • 2 colors32%
  • Most common main color here: black40%

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

Structure

Logo type
LettermarkClassified by AI
Proportions
1 : 1.0Roughly square
Ink coverage
91%9.5% empty space inside the outline
Symmetry
Nearly symmetric82% left-right match
Outline
Free-formOverall silhouette
Complexity
Moderate2 shapes, about 89 points

Tints and shades

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#A2CBC7

#4D443F

Typography

Lettering style: Geometric sans, uppercase.

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

Free fonts in this style: Montserrat, Outfit, Urbanist

Visual description

Classified by AI

Symbol shows
Letter C over square
Style
Geometric, flat, minimal
Layout
Symbol on its own
Techniques
Negative space, geometric construction

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