Hall and Hanna (33), conducted a study on webpage text and background colour combination to memory retention. One hundred and thirty six university students participated in their study. They used two different types of websites; an educational website which contained information regarding a neuroscience subject and a website which was more commercial that had an advertisement of products. Hall and Hanna used four different types of ground and figure colour combinations for each of the websites; black on white background, white on black background, light blue on dark blue background and teal on black background. Each participant was randomly assigned to each of the four conditions and they were given 10 minutes to view the websites. After that, they were required to answer 10 multiplechoice questions used to measure the readability, retention, aesthetics, and behavioural intention level. It was expected that the condition with a higher contrast level of colour will result in a higher level of readability and also retention rate. The result obtained show significant differences in the four conditions and the post-hoc tests showed that the readability performance was highest on the black on white background condition. This condition was interpreted to have the highest contrast level compared to the others and this contributes to a better readability level. The significant result found for readability was however not found on retention rate. This means that the different contrast of colour combination used only effects readability level but not memory or retention rate (33).