K+S Aktiengesellschaft is a German minerals company headquartered in Kassel, with roots dating back to the mid-19th century when miners in Germany exploited the world’s first potash deposits and began fertilizer production.[1] The company’s visual identity centers on a blue parallelogram containing the white letters “K+S,” a mark that has undergone two documented redesigns since the early 1990s.
Design and History
The K+S logo was redesigned in 1993, shortly after the merger of Kali und Salz GmbH with the East German potash industry. According to the Werra-Kalibergbau-Museum, the earlier rectangular, black signet with upright letters was replaced by a blue, right-leaning parallelogram with italicized lettering.[2] The museum notes that the logo change was intended as an outward sign of the corporate transformation following the merger.[2]
In November 2019, K+S further developed the logo as part of a broader corporate design refresh tied to its “Shaping 2030” strategy and the bundling of its German potash, salt, waste disposal, and logistics activities under a “One K+S” framework.[3] The company stated that the colors became “brighter and more contemporary,” and that the logo was made “more modern, can be used flexibly, and is also more clearly recognizable in digital media.”[3] The redesign accompanied the launch of a new unified website at kpluss.com.[3]
Meaning and Symbolism
The current K+S trademark, filed with the USPTO in June 2023 and registered in August 2024, claims blue and white as features of the mark, with a blue parallelogram and white letters “K+S.”[4] The company’s brand guidelines describe the dark blue as associated with the corporate value “Agile,” and note that the shades of blue “relate to each other and therefore emphasize the idea of One Company.”[5] The guidelines also reference a green accent color tied to the value “Safe & Sustainable.”[5]
Typography and Design
K+S brand guidelines specify the dark blue logo color values as CMYK 100 71 0 33, sRGB 0 58 120, Pantone 7687 C / 288 U, HKS 41 K / 41 N, and RAL 270 30 40.[5] The guidelines also require a safe area around the logo equivalent to the height of the rhombus, and state that the negative, color logo version uses the dark blue as its background.[5] The parallelogram shape is referenced in the guidelines as a “rhombus” for spacing and placement purposes.[6]
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