Case study 1
Dmix writes about about one of their projects in which they tested
green and red button colors. In their testing with 600 subjects they
found that conversions increased by 34% when they used red button.
34% is a decent lift in conversion. 1:0 for red buttons.
Case study 2
Next test comes courtesy of HubSpot. They ran similar test with green
and red buttons on one of their clients web page. They ran the test
over a period of a few days worth of traffic and in total had over
2000 subjects visit.
Their result was that red button outperformed green button by 21%. 2:0
to red button.
Case study 3
Third test comes courtesy of Visual Website Optimizer. Their client
was an eCommerce site selling mobile phones and accessories. They
tested Buy Now button colors on their site. In competition were white
button with green text, green button with white text and red (darker
orange) button with white text.
And the winner was… You guess it – it was the red button, this time
with 5% better conversion. 3:0 for the red button