Which groundbreaking color perception discovery led many global brands to recalibrate their visual identities for different cultural markets in the late 1990s?

Color psychology has been a fundamental element of brand identity since the early days of modern marketing. Companies carefully select their brand colors to evoke specific emotions and build recognition. This trivia question explores a fascinating discovery about color perception that revolutionized how brands approach their visual identity in different global markets.

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The Berlin & Kay study proving that different cultures categorize colors differently based on language
The Munsell Color System that standardized color measurement across industries
The discovery of tetrachromacy (the ability of some humans to see a fourth primary color)
The identification of the CIELAB color space that maps human color perception