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UX experiments / Craft & speed

Craft & speed · A/B test · replicated on 32M users

Can a slightly darker blue change revenue? Bing's color test

Microsoft Bing · c. 2013

Ad titles in the current blue, or a slightly darker blue with slightly lighter captions?

Version A: Current colors
ACurrent colors
Version B: Darker blue, lighter caption
BDarker blue, lighter caption

Make your call. Which version won, and why? Decide before you open the result. Guessing first is what trains your judgment.

Made your call? See the result

More than $10M a year in revenue.

What happened

Everyone was skeptical, so Bing replicated the test on 32 million users. The results held.

Why it worked

Contrast and hierarchy change what people read and click, even when nobody can say why.

The takeaway

Visual craft is measurable. Treat color and contrast as product decisions.

Source

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