Diem logo with three wavy purple lines beside lowercase wordmark diem
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Diem

Diem was the name adopted in December 2020 by the Libra Association, the Geneva-based consortium behind Facebook's proposed global digital currency. The Diem logo continued the visual identity created for Libra by the San Francisco design agency Character, retaining the purple theme and lowercase wordmark.

Diem was the name adopted in December 2020 by the Libra Association, the Geneva-based consortium behind Facebook’s proposed global digital currency. The rebrand from Libra to Diem, the Latin word for “day,” was announced on December 1, 2020, as the project sought to move past the regulatory controversy that had surrounded it since its June 2019 unveiling. The Diem Association described the new name as denoting “a new day for the project.” [1]

Design and History

The Diem logo was not a new design but a continuation of the visual identity created for Libra. When the association announced the rebrand, it unveiled a logo that retained the purple theme, triple horizontal swooshes, and lowercase wordmark of the original Libra mark. [1] The new logo maintained the purple color and fluid movement design, with “diem” written in lowercase. [2]

The original Libra logo was designed by Character, a San Francisco-based design agency. Character’s creative director and co-founder Ben Pham shared the Calibra logo on LinkedIn on the same day Facebook announced Libra in June 2019. [3] The agency’s work on the Libra identity drew public attention when Stuart Sopp, CEO of the fintech company Current, claimed that the Calibra logo closely resembled a logo Character had designed for Current in 2016. Sopp told CNBC that both logos were created by the same design firm and featured a wave inside a circle. [4]

The Diem Association’s trademark filing for the DIEM mark describes it as consisting of “three vertically-stacked wavy lines appearing to the left of the stylized word DIEM.” [5]

Meaning and Symbolism

The name Diem derives from the Latin word for “day,” best known from the phrase “carpe diem.” The association’s announcement said the name “denotes a new day for the project.” [1] The original Libra name came from the Latin word for “scales” or “balance,” a reference to the project’s proposed basket of stable currencies. [6]

The design agency Sea Street, which worked on the Diem brand, described its approach as creating “a simple, yet flexible brand identity that could be easily adapted to different cultures and markets around the world.” [7]

Typography and Design

The Diem wordmark uses lowercase lettering, a feature carried over from the original Libra logo. [1] The mark consists of three vertically stacked wavy lines to the left of the stylized word “Diem,” according to the trademark filing. [5]

The project’s code repository on GitHub shows a pull request from December 2020 titled “Update diem logo,” which updated the logo with the new name. [8]

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

Single color.

  • #42318CBlue, 100%

    RGB 66, 49, 140; CMYK 53, 65, 0, 45

    White text 10.2:1 (passes AA)

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Backgrounds and sizes

Contrast and color difference

Compared with Crypto

648 measured Crypto logos

  • Main color blue31%
  • Combination mark27%
  • Single color30%

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

Structure

Logo type
Combination markClassified by AI
Proportions
4.0 : 1Horizontal
Ink coverage
36%64% empty space inside the outline
Symmetry
Asymmetric30% left-right match
Outline
Free-formOverall silhouette
Complexity
Moderate1 shapes, about 303 points

Tints and shades

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#42318C

Typography

Lettering style: Geometric sans, lowercase.

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
Three stacked wavy lines
Style
Minimal, flat, geometric
Layout
Symbol left of the name
Techniques
Geometric construction
Text in the logo
diem

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Same main color, same industry

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