Duolingo have 16 hex colors that represent their brand, and they are 7ac70c, 8ee000, faa918, ffc715, d33131, e53838, 1cb0f6, 14d4f4, 8549ba, a560e8, 4c4c4c, 6f6f6f, cfcfcf, f0f0f0, bff199, f7c8c9.
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