Results (n = 722)

Color Avg. Response Time Avg. Time
(sec.)
Avg.
Pleasing
Avg.
Readability
 1   Black on white
8.784 3.37 4.40
 2   White on black
9.269 3.26 3.83
 3   Black on yellow
9.233 3.08 4.08
 4   Green on black
9.203 3.19 3.53
 5   Gray on black
8.923 2.46 2.67
 6   Green on yellow
8.924 2.71 3.39
 7   Black on pale blue
9.990 3.51 4.03
 8   White on dark gray
11.523 2.61 3.05
 9   White on blue
9.167 2.93 3.16
 10   Red on black
9.174 2.82 3.10

The averages for “pleasing” and “readability” are on a scale from 0 to 5, where 0 is worst and 5 is best.