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ANALYSIS OF THE MUNSELL COLOR SYSTEM
Table VII. Excitation purities for 70 Munsell notations: derived from the disk-mixture rule (psychophysical); computed from 1926 spectrophotometric data both for diffuse and 45° illumination (1926 data); and from the Glenn-Killian data on the papers of the Munsell Book of Color, with conformity to the Newhall psychological check indicated by direction of difference (psychological).
| Munsell Notation |
Excitation Purity | ||||||
| Psycho- physical[1] |
*[2] | 1926 Data | *[2] | Psycho- logical[3] | |||
| Dif- fuse[4] |
45°[5] | ||||||
| R | 2/4 | 50.7 | 18.0 | 22.0 | n | 19.8++ | |
| YR | 2/1 | 24.5 | 12.5 | 13.8 | n | 15.4+ | |
| Y | 2/1 | 26.7 | 16.1 | 14.7 | n | 10.0+ | |
| GY | 2/1 | 22.4 | 11.2 | 11.5 | n | 7.8 | |
| G | 2/1 | 6.6 | n | 7.5 | 6.8 | 4.5- | |
| BG | 2/2 | 23.2 | n | 22.0 | 23.9 | 15.5 | |
| B | 2/4 | 62.9 | 41.6 | 41.3 | n | 40.2 | |
| PB | 2/2 | 25.2 | 39.5 | 37.0 | n | 26.5 | |
| P | 2/3 | 29.1 | 24.7 | 24.7 | n | 29.8-- | |
| RP | 2/2 | 23.3 | 19.0 | 18.3 | n | 20.0 | |
| R | 3/7 | 59.1 | 40.5 | 43.2 | n | 39.2 | |
| YR | 3/4 | 65.3 | 35.8 | 38.0 | n | 47.9- | |
| Y | 3/3 | 53.4 | 34.0 | 35.9 | n | 23.7++ | |
| GY | 3/3 | 44.9 | 28.3 | 29.2 | n | 20.6+ | |
| G | 3/4 | 17.7 | 6.8 | 7.2 | n | 15.2- | |
| BG | 3/4 | 31.0 | 29.3 | 29.2 | 27.2- | ||
| B | 3/5 | 52.4 | 43.0 | 43.4 | n | 45.6- | |
| PB | 3/9 | 75.6 | 58.3 | 59.0 | n | 54.7 | |
| P | 3/6 | 38.8 | 29.0 | 30.9 | n | 36.1- | |
| RP | 3/6 | 61.2 | 31.3 | 30.2 | n | 33.0 | |
| R | 4/10 | 63.3 | 52.2 | 54.1 | n | 51.2- | |
| YR | 4/5 | 61.2 | n | 58.2 | 58.8 | 50.8- | |
| Y | 4/5 | 66.8 | 58.1 | 59.2 | n | 58.5- | |
| GY | 4/5 | 56.1 | n | 49.5 | 51.0 | 35.8 | |
| G | 4/7 | 23.2 | 18.8 | 20.3 | 25.0-- | ||
| BG | 4/5 | 29.1 | n | 31.5 | 32.2 | 27.0- | |
| B | 4/6 | 47.2 | 43.6 | 42.9 | n | 45.3- | |
| PB | 4/10 | 63.2 | 51.5 | 52.1 | n | 51.9- | |
| P | 4/6 | 29.1 | 23.0 | 25.0 | 28.7+ | ||
| RP | 4/6 | 35.0 | 24.6 | 26.0 | n | 27.8 | |
| R | 5/10 | 50.7 | 47.1 | 48.2 | n | 47.0- | |
| YR | 5/7 | 68.6 | 57.5 | 59.8 | n | 59.6- | |
| Y | 5/7 | 74.8 | 60.8 | 61.2 | 75.6- | ||
| GY | 5/6 | 53.8 | 40.1 | 41.8 | n | 46.0 | |
| G | 5/7 | 18.6 | 20.5 | 21.2 | 19.2-- | ||
| BG | 5/5 | 23.3 | 16.4 | 16.4 | 24.0 | ||
| B | 5/6 | 37.8 | n | 35.5 | 36.0 | 41.4-- | |
| PB | 5/8 | 40.3 | 34.5 | 34.7 | 40.1- | ||
| P | 5/6 | 23.3 | 18.3 | 18.2 | 26.8-- | ||
| RP | 5/6 | 28.0 | 17.0 | 17.2 | n | 22.1+ | |
| R | 6/8 | 33.8 | 30.1 | 31.5 | 30.0+ | ||
| YR | 6/8 | 65.3 | n | 71.5 | 71.8 | 59.6- | |
| Y | 6/7 | 62.3 | 68.2 | 67.5 | 69.0- | ||
| GY | 6/8 | 59.8 | 57.0 | 57.0 | 55.5- | ||
| G | 6/7 | 15.5 | 18.4 | 17.7 | 19.4--- | ||
| BG | 6/5 | 19.4 | 17.8 | 17.8 | 17.7 | ||
| B | 6/5 | 26.2 | 26.0 | 26.9 | 28.9-- | ||
| PB | 6/6 | 25.2 | n | 23.7 | 24.5 | 27.2 | |
| P | 6/4 | 12.9 | n | 12.2 | 12.1 | 16.0— | |
| RP | 6/4 | 15.5 | 12.5 | 12.5 | n | 12.1+ | |
| R | 7/6 | 21.7 | n | 21.0 | 22.0 | 17.4+ | |
| YR | 7/7 | 49.0 | 44.0 | 45.2 | n | 46.1- | |
| Y | 7/8 | 61.1 | 73.5 | 73.4 | n | 75.2-- | |
| GY | 7/7 | 44.9 | 55.0 | 56.5 | n | 50.7- | |
| G | 7/7 | 13.3 | 12.3 | 12.2 | 13.9-- | ||
| BG | 7/5 | 16.6 | 8.4 | 7.8 | n | 13.9- | |
| B | 7/4 | 18.0 | 14.7 | 14.7 | 17.4 | ||
| PB | 7/4 | 14.4 | 17.9 | 17.6 | n | 18.2 | |
| P | 7/3 | 8.3 | n | 6.0 | 6.7 | 10.9- | |
| RP | 7/4 | 13.3 | 9.8 | 9.5 | n | 8.0+ | |
| R | 8/4 | 12.7 | n | 12.1 | 12.1 | 9.1 | |
| YR | 8/5 | 30.6 | n | 34.5 | 34.1 | 25.9 | |
| Y | 8/9 | 60.1 | 73.8 | 74.4 | n | 70.6- | |
| GY | 8/6 | 33.6 | 41.7 | 42.6 | n | 40.6- | |
| G | 8/5 | 8.3 | n | 8.3 | 9.0 | 7.2- | |
| BG | 8/3 | 8.7 | 4.5 | 4.1 | 7.8 | ||
| B | 8/2 | 6.3 | n | 7.0 | 6.8 | 12.0- | |
| PB | 8/2 | 4.8 | 6.0 | 5.0 | 5.9 | ||
| RP | 8/2 | 5.8 | 4.7 | 3.5 | 3.7- | ||
- ↑ From Eq. [8].
- ↑ 2.0 2.1 The notations in these columns indicate whether the excitation purities for the 1926 data agree better with the psychophysical system or the psychological. An “n” between the first and second columns of excitation purities indicates “nearer to the psychophysical system,” while “nearer to the psychological system” is indicated by an “n” between the third and fourth columns. If the excitation purity found from the 1926 data does not agree significantly better with one than the other, no notation is given.
- ↑ Read or interpolated from Table I of the next paper in this series (16) which gives the Glenn-Killian measurements of the papers in the 1929 Munsell Book of Color. The plus and minus signs indicate the directions of the changes necessary to improve agreement with the psychological requirements evaluated in the Newhall subcommittee report (15) forming the final paper of this series. For example, for R 6/8 the excitation purity given by Glenn and Killian is 30.0; but the Newhall data indicate that R 6/8, if it is to-fit into the ideal psychological system, should be slightly higher in excitation purity; so a plus sign is added. Two plus signs indicate that the difference is more than slight.
- ↑ From Table III.
- ↑ From Table IV.
