Color Data: "Dimensions of Color Vision." Journal of Psychology, 68:530-536, by G. Ekman, 1954

Entries are similarities judgements by 31 subjects between 14 pairs of colors



 434 INDIGO        100  86  42  42  18   6   7   4   2   7   9  12  13  16
 445 BLUE           86 100  50  44  22   9   7   7   2   4   7  11  13  14
 465                42  50 100  81  47  17  10   8   2   1   2   1   5   3
 472 BLUE-GREEN     42  44  81 100  54  25  10   9   2   1   0   1   2   4
 490                18  22  47  54 100  61  31  26   7   2   2   1   2   0
 504 GREEN           6   9  17  25  61 100  62  45  14   8   2   2   2   1
 537                 7   7  10  10  31  62 100  73  22  14   5   2   2   0
 555 YELLOW-GREEN    4   7   8   9  26  45  73 100  33  19   4   3   2   2
 584                 2   2   2   2   7  14  22  33 100  58  37  27  20  23
 600 YELLOW          7   4   1   1   2   8  14  19  58 100  74  50  41  28
 610                 9   7   2   0   2   2   5   4  37  74 100  76  62  55
 628 ORANGE-YELLOW  12  11   1   1   1   2   2   3  27  50  76 100  85  68
 651 ORANGE         13  13   5   2   2   2   2   2  20  41  62  85 100  76
 674 RED            16  14   3   4   0   1   0   2  23  28  55  68  76 100