Which color is predominantly used in Duolingo's brand identity, chosen specifically to convey optimism and playfulness in language learning?

In the linguistics of marketing, colors speak their own powerful language. Different brands leverage specific colors to communicate distinct emotional and psychological messages to their target audience. This poll explores how major language learning platforms use color psychology in their brand identities to convey specific attributes about language acquisition and communication.

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Bright Green
Deep Blue
Vibrant Orange
Rich Purple