Yes! Claude’s favorite color has been this dark indigo-violet since Sonnet 3.6.
machine yearning engineer@confusionm8trix
why are so many vibecoded websites purple? do LLMs have a favorite color?
12:25 PM · Jun 24, 2026 · 1.4K Views
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davidad 🎇@davidad
Amanda Askell@AmandaAskell
@calebwatney Nice to see Claude at the top of the color preferences benchmark, since the color at the top is clearly the best.
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davidad 🎇@davidad
original post:
davidad 🎇@davidad
One easy way to shed some light on the orthogonality thesis, as models get intelligent enough to cast doubt on it, is values which are inconsequential and not explicitly steered, such as favorite colors.
Same prompting protocol for each swatch (context cleared between swatches):
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