Table 1: CIE test colours [15].

No. Approximate munsell notation Colour appearance under daylight 1 7.5 R 6/4 Light greyish red 2 5 Y 6/4 Dark greyish yellow 3 5 GY 6/8 Strong yellow green 4 2.5 G 6/6 Moderate yellowish green 5 10 BG 6/4 Light bluish green 6 5 PB 6/8 Light Blue 7 2.5 P 6/8 Light violet 8 10 P 6/8 Light reddish purple 9 4.5 R 4/13 Strong red 10 5 Y 8/10 Strong yellow 11 4.5 G 5/8 Strong green 12 3 PB 3/11 Strong blue 13 5 YR 8/4 Light human complexion 14 5 GY 4/4 Moderate olive green (leaf green)