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Fractions for disk mixture to produce abridgment points in Ostwald ideal triangles with a real white equal to aa, a real black equal to pp, and a chromatic sample equal to the idea pa.
W
B
C
aa
1.000
0.000
0.000
cc
0.616
0.384
0.000
ee
0.373
0.627
0.000
gg
0.220
0.780
0.000
ii
0.124
0.876
0.000
ll
0.063
0.937
0.000
nn
0.024
0.976
0.000
pp
0.000
1.000
0.000
pa
0.000
0.000
1.000
na
0.024
0.000
0.976
pc
0.000
0.384
0.616
la
0.063
0.000
0.937
nc
0.024
0.384
0.592
pe
0.000
0.627
0.373
ia
0.124
0.000
0.876
lc
0.063
0.384
0.553
ne
0.024
0.627
0.349
pg
0.000
0.780
0.220
ga
0.220
0.000
0.780
ic
0.124
0.384
0.492
le
0.063
0.627
0.310
ng
0.024
0.780
0.196
pi
0.000
0.876
0.124
ea
0.373
0.000
0.627
gc
0.220
0.384
0.396
ie
0.124
0.627
0.249
lg
0.063
0.780
0.157
ni
0.024
0.876
0.100
pl
0.000
0.937
0.063
ca
0.616
0.000
0.384
ec
0.373
0.384
0.243
ge
0.220
0.627
0.153
ig
0.124
0.780
0.096
li
0.063
0.876
0.061
nl
0.024
0.937
0.039
pn
0.000
0.976
0.024
Table VI
Colorimetric specifications of three sets of original Ostwald samples—representing a 24-step hue circuit.
100 step hue series (Ostwald original) (made available by Munsell Color Company)
pa series (Unesma, 1921) (made available by Munsell Color Company)
pa series (Ostwald Laboratory, 1935)* (made available by Dr. H. Zeishold)
x
y
B
DWL
Pe
x
y
B
DWL
Pe
x
y
B
DWL
Pe
00c
0.2167
0.1562
0.136
461.3
56.0
00
0.4188
0.4780
0.613
572.2
72.5
1
0.4265
0.4846
0.722
572.6
76.4
04c
.1887
.1760
.152
474.8
60.7
04
.4510
.4776
.575
575.8
81.0
2
.4544
.4612
.617
577.6
77.8
08c
.1939
.2143
.160
479.5
53.7
08
.4764
.4518
.471
580.4
81.0
3
.4784
.4367
.508
582.3
77.4
13c
.2012
.2545
.169
483.8
48.4
13
.5094
.4112
.348
587.9
79.0
4
.5074
.4137
.408
587.4
79.0
17c
.2075
.2699
.181
485.3
42.2
17
.5296
.3723
.246
594.8
73.9
5
.5333
.3860
.310
593.4
78.5
21c
.2123
.2846
.175
487.0
39.0
21
.5404
.3478
.197
602.6
70.1
6
.5570
.3537
.207
601.7
76.1
25c
.2171
.2978
.184
488.5
36.0
25
.5245
.3165
.147
616.5
57.4
7
.5516
.3158
.130
616.9
64.5
29c
.2239
.3284
.189
492.7
31.2
29
.4932
.2874
.124
493.3c
45.8
8
.4816
.2659
.122
494.5c
52.5
33c
.2376
.3639
.197
499.7
24.0
33
.4131
.2262
.107
501.8c
55.5
9
.3946
.2071
.091
507.7c
59.9
38c
.2810
.4440
.304
536.8
28.0
38
.3611
.2018
.101
520.6c
55.7
10
.3450
.1802
.079
545.0c
61.5
42c
.3253
.4715
.442
555.8
46.0
42
.3236
.1913
.088
545.0c
52.8
11
.2881
.1587
.068
557.6c
59.5
46c
.3569
.4746
.540
563.0
53.2
46
.2716
.1693
.082
562.0c
52.0
12
.2300
.1359
.058
402.0
57.9
50c
.4060
.4622
.665
572.0
61.7
50
.2044
.1389
.104
462.0
62.3
13
.1805
.1085
.069
464.4
74.7
54c
.4431
.4661
.637
576.0
76.0
54
.1837
.1821
.110
476.9
61.8
14
.1740
.1435
.096
472.7
70.3
58c
.4613
.4469
.574
579.7
75.7
58
.1928
.2245
.116
480.8
52.7
15
.1738
.1921
.125
478.9
63.6
63c
.4879
.4064
.431
587.1
71.7
63
.1959
.2374
.106
482.2
50.0
16
.1760
.2247
.139
482.6
58.6
67c
.5000
.3858
.368
591.4
69.5
67
.2000
.2573
.110
484.3
46.4
17
.1810
.2565
.135
485.2
53.3
71c
.5107
.3507
.259
600.4
63.0
71
.2048
.2767
.108
486.3
42.3
18
.1846
.2849
.140
487.9
49.2
75c
.4949
.3260
.216
609.6
52.1
75
.2088
.2980
.113
488.8
39.1
19
.1870
.3084
.138
490.2
46.4
79c
.4388
.2712
.173
495.2c
42.2
79
.2144
.3291
.117
492.6
34.6
20
.1945
.3428
.141
493.7
41.1
83c
.3985
.2372
.168
503.7c
52.4
83
.2295
.3772
.135
500.2
26.6
21
.2116
.4137
.160
503.4
32.2
88c
.3420
.1991
.176
533.4
53.2
88
.2669
.4677
.205
532.4
31.7
22
.2869
.4826
.265
543.4
39.8
92c
.3095
.1857
.152
545.0
52.5
92
.3032
.4911
.285
549.2
45.8
23
.3319
.5141
.445
556.3
59.3
96c
.2752
.1754
.135
561.5
50.1
96
.3574
.4968
.430
562.0
61.4
24
.3843
.5036
.618
566.0
70.2
On the basis of a spectrophotometric pigment identification method, it is believed that these samples are the same as those shown in the Ostwald Color Album arranged by J. Scott Taylor (Winsor and Newton, Ltd., London).
Table VII
Colorimetric specifications of original samples bearing Ostwald notations for two pairs of triangles, hues 04–54 and 25–75.
x
y
B
DWL
Pe
04pa
0.451
0.478
0.575
575.8
81.0
04na
.452
.476
.597
576.1
81.0
04pc
.437
.477
.394
574.5
77.0
04la
.439
.467
.637
575.5
75.0
04nc
.433
.461
.417
575.5
72.0
04pe
.427
.456
.269
575.2
69.0
04ia
.430
.449
.630
576.2
67.8
04lc
.435
.455
.382
576.1
71.0
04ne
.434
.434
.238
575.5
58.1
04pg
.406
.424
.164
576.2
54.0
04ga
.399
.424
.686
575.0
52.7
04ic
.405
.430
.435
575.6
56.0
04le
.399
.415
.238
576.1
50.2
04ng
.384
.397
.168
576.4
41.3
04pi
.376
.395
.112
575.2
38.4
04ea
.371
.385
.678
576.1
34.8
04gc
.378
.397
.487
575.2
39.9
04ie
.379
.395
.266
575.8
39.5
04lg
.357
.372
.133
575.2
27.5
04ni
.355
.365
.102
576.8
25.0
04pl
.342
.362
.077
573.0
20.8
04ca
.339
.350
.744
575.3
16.9
04ec
.344
.356
.505
575.3
19.8
04ge
.347
.360
.310
575.2
21.5
04ig
.344
.357
.172
575.0
20.0
04li
.332
.344
.099
574.5
13.3
04nl
.323
.330
.081
577.0
7.0
04pn
.330
.341
.057
574.5
12.0
25pa
.524
.316
.147
616.5
57.4
25na
.534
.327
.176
605.1
62.8
25nc
.510
.337
.131
604.6
59.3
25la
.492
.323
.219
611.6
50.5
25nc
.498
.339
.168
603.8
56.5
25pe
.481
.333
.104
605.5
50.1
25ia
.460
.324
.274
610.0
42.3
25lc
.469
.325
.189
609.5
44.9
25ne
.464
.334
.133
604.0
41.0
25pg
.424
.332
.084
602.5
34.8
25ga
.416
.321
.362
610.4
29.8
25ic
.422
.319
.229
613.5
30.7
25le
.442
.326
.114
607.8
37.8
25ng
.410
.325
.102
606.0
28.0
25pi
.378
.326
.068
603.0
20.6
25ea
.373
.322
.483
606.0
17.5
25gc
.383
.323
.330
606.0
21.2
25ie
.388
.318
.190
614.0
21.2
25lg
.381
.326
.107
603.0
21.5
25ni
.365
.321
.083
607.0
16.1
25pl
.352
.324
.056
599.0
13.0
25ca
.340
.322
.677
599.6
9.5
25ec
.348
.321
.410
603.0
11.3
25ge
.349
.325
.238
597.0
12.8
25ig
.350
.320
.138
604.0
11.6
25li
.346
.327
.093
594.0
12.4
25nl
.342
.327
.076
592.0
11.5
25pn
.340
.328
.050
590.0
11.0
54pa
0.184
0.182
0.110
476.9
61.8
54na
.182
.174
.122
472.7
63.3
54pc
.197
.182
.094
474.3
57.2
54la
.192
.175
.134
474.4
60.0
54nc
.200
.186
.128
474.3
55.5
54pe
.228
.226
.073
475.9
40.5
54ia
.208
.201
.223
475.4
50.8
54lc
.213
.199
.121
473.9
49.5
54ne
.228
.222
.082
475.0
41.0
54pg
.240
.240
.070
476.0
34.5
54ga
.226
.215
.290
474.0
42.9
54ic
.228
.213
.169
473.5
43.0
54le
.238
.228
.092
474.0
37.5
54ng
.252
.245
.080
474.2
30.4
54pi
.263
.262
.067
473.0
21.0
54ea
.258
.251
.388
473.5
27.2
54gc
.256
.249
.258
473.0
27.2
54ie
.252
.249
.158
474.8
29.1
54lg
.270
.276
.096
476.5
18.5
54ni
.266
.265
.075
474.5
22.0
54pl
.272
.271
.050
474.5
19.5
54ca
.290
.292
.578
471.0
9.8
54ec
.286
.287
.353
474.0
12.3
54ge
.286
.287
.222
474.0
12.3
54ig
.278
.278
.119
474.0
16.3
54li
.296
.300
.087
475.0
7.1
54nl
.291
.298
.073
478.0
9.0
54pn
.294
.296
.042
473.0
8.5
75pa
.209
.298
.113
488.8
39.1
75na
.203
.292
.146
488.3
42.0
75pc
.224
.297
.107
488.3
33.6
75la
.208
.306
.179
489.8
38.9
75nc
.219
.292
.146
487.7
35.8
75pe
.245
.309
.085
488.0
25.0
75ia
.220
.304
.289
489.4
34.5
75lc
.239
.314
.186
490.6
26.5
75ne
.258
.327
.114
493.5
18.6
75pg
.263
.308
.069
488.5
18.4
75ga
.240
.300
.411
488.1
27.2
75ic
.252
.308
.247
489.3
22.2
75le
.268
.345
.162
499.5
14.0
75ng
.271
.318
.109
491.5
14.2
75pi
.280
.319
.062
492.0
11.0
75ea
.277
.304
.501
486.4
13.4
75gc
.268
.311
.309
489.5
16.0
75ie
.258
.311
.202
488.9
19.9
75lg
.289
.320
.111
493.0
7.5
75ni
.286
.311
.086
488.2
9.5
75pl
.296
.316
.057
491.0
5.1
75ca
.289
.312
.645
488.1
8.1
75ec
.284
.315
.384
490.3
9.8
75ge
.288
.315
.256
490.1
8.3
75ig
.286
.314
.177
490.0
9.0
75li
.297
.319
.103
493.0
4.5
75nl
.306
.319
.074
500.0
1.5
75pn
.302
.315
.048
488.0
3.0
Tables (7)
Table I
W and B fractions for the complete Ostwald gray scale, aa to zz.
W
B
aa
0.8913
0.1087
bb
.7079
.2921
cc
.5623
.4377
dd
.4467
.5533
ee
.3548
.6452
ff
.2818
.7182
gg
.2239
.7761
hh
.1778
.8222
ii
.1413
.8587
kk
.1122
.8878
ll
.0891
.9109
mm
.0708
.9292
nn
.0562
.9438
oo
0.0447
0.9553
pp
.0355
.9645
qq
.0282
.9718
rr
.0224
.9776
ss
.0178
.9822
tt
.0141
.9859
uu
.0112
.9888
vv
.0089
.9911
ww
.0071
.9929
xx
.0056
.9944
yy
.0045
.9955
zz
.0035
.9965
Table II
Tristimulus data for I.C.I. observer and Illuminant C for 29 pairs of semichromes, C=1.
Type I
Type Ic
λ1
λ2
X
Y
Z
S
x
y
R
λ1
λ2
X
Y
Z
S
x
y
R
I
380.0
567.0
3862
6380
12573
22815
0.1693
0.2796
0.599
Ic
380.0
567.0
6577
4267
6
10850
0.6063
0.3933
0.401
II
420.0
567.3
3787
6407
12102
22296
.1699
.2874
.602
IIc
420.0
567.3
6652
4240
477
11369
.5852
.3729
.398
III
430.0
567.5
3575
6419
11009
21003
.1702
.3056
.603
IIIc
430.0
567.5
6864
4228
1570
12662
.5422
.3339
.397
IV
440.0
568.0
3232
6450
9130
18812
.1718
.3429
.606
IVc
440.0
568.0
7207
4197
3449
14854
.4853
.2825
.394
V
450.0
568.9
2874
6501
6945
16320
.1761
.3983
.611
Vc
450.0
568.9
7565
4146
5634
17345
.4362
.2390
.389
VI
455.0
569.6
2724
6543
5853
15120
.1802
.4327
.614
VIc
455.0
569.6
7715
4104
6726
18545
.4161
.2213
.385
VII
460.0
570.4
2599
6588
4797
13984
.1859
.4711
.619
VIIc
460.0
570.4
7840
4059
7782
19682
.3984
.2062
.381
VIII
466.8
572.0
2504
6684
3497
12685
.1974
.5269
.628
VIIIc
466.8
572.0
7935
3963
9082
20980
.3782
.1889
.372
IX
470.0
573.1
2510
6753
2936
12199
.2058
.5536
.634
IXc
470.0
573.1
7929
3894
9643
21466
.3694
.1814
.366
X
475.0
575.7
2622
6931
2214
11767
.2228
.5890
.651
Xc
475.0
575.7
7817
3716
10365
21898
.3570
.1697
.349
XI
480.0
580.0
2925
7232
1641
11798
.2479
.6130
.679
XIc
480.0
580.0
7514
3415
10938
21867
.3437
.1561
.321
XII
483.0
584.1
3269
7513
1363
12145
.2692
.6186
.706
XIIc
483.0
584.1
7170
3134
11216
21520
.3332
.1456
.294
XIII
485.0
587.8
3600
7756
1203
12559
.2866
.6176
.728
XIIIc
485.0
587.8
6839
2891
11376
21106
.3241
.1369
.272
XIV
487.0
593.0
4085
8077
1060
13222
.3090
.6109
.759
XIVc
487.0
593.0
6354
2570
11519
20442
.3108
.1257
.241
XV
489.0
600.9
4833
8511
934
14278
.3385
.5961
.799
XVc
489.0
600.9
5606
2136
11645
19387
.2892
.1101
.201
XVI
490.4
610.0
5668
8930
852
15450
.3669
.5780
.839
XVIc
490.4
610.0
4771
1717
11726
18215
.2620
.0942
.161
XVII
491.2
620.0
6490
9298
812
16600
.3910
.5601
.873
XVIIc
491.2
620.0
3949
1349
11767
17065
.2314
.0790
.127
XVIII
491.7
630.0
7149
9569
786
17504
.4084
.5467
.899
XVIIIc
491.7
630.0
3290
1078
11793
16161
.2036
.0667
.101
XIX
492.0
640.0
7626
9751
771
18148
.4202
.5373
.916
XIXc
492.0
640.0
2813
896
11808
15517
.1813
.0577
.084
XX
492.2
650.0
7944
9869
761
18574
.4277
.5313
.927
XXc
492.2
650.0
2495
778
11818
15091
.1654
.0515
.073
XXI
492.3
660.0
8138
9938
756
18832
.4321
.5277
.933
XXIc
492.3
660.0
2301
709
11823
14833
.1551
.0477
.066
XXII
492.4
740.0
8351
10013
751
19115
.4369
.5238
.940
XXIIc
492.4
740.0
2088
634
11828
14550
.1435
.0435
.060
Type II
Type IIc
XXIII
500.0
740.0
8340
9774
458
18572
0.4491
0.5263
0.918
XXIIIc
380.0
500.0
2099
873
12121
15093
0.1391
0.0578
0.082
XXIV
510.0
740.0
8536
9338
229
17903
.4657
.5216
.877
XXIVc
380.0
510.0
2103
1309
12350
15762
.1334
.0830
.123
XXV
520.0.
740.0
8305
8736
115
17156
.4841
.5092
.820
XXVc
380.0
520.0
2134
1911
12464
16509
.1293
.1158
.180
XXVI
530.0
740.0
8197
7969
59
16225
.5053
.4912
.748
XXVIc
380.0
530.0
2242
2678
12520
17440
.1286
.1536
.252
XXVII
540.0
740.0
7970
7056
29
15055
.5295
.4687
.663
XXVIIc
380.0
540.0
2469
3591
12550
18610
.1327
.1930
.337
XXVIII
550.0
740.0
7595
6040
14
13649
.5565
.4425
.567
XXVIIIc
380.0
550.0
2844
4607
12565
20016
.1421
.2302
.433
XXIX
560.0
740.0
7054
4987
8
12049
.5855
.4139
.468
XXIXc
380.0
560.0
3385
5660
12571
21616
.1566
.2618
.532
Table III
W, B, and C fractions for abridgement points (28), zero B, and zero W series.
Fractions for disk mixture to produce abridgment points in Ostwald ideal triangles with a real white equal to aa, a real black equal to pp, and a chromatic sample equal to the idea pa.
W
B
C
aa
1.000
0.000
0.000
cc
0.616
0.384
0.000
ee
0.373
0.627
0.000
gg
0.220
0.780
0.000
ii
0.124
0.876
0.000
ll
0.063
0.937
0.000
nn
0.024
0.976
0.000
pp
0.000
1.000
0.000
pa
0.000
0.000
1.000
na
0.024
0.000
0.976
pc
0.000
0.384
0.616
la
0.063
0.000
0.937
nc
0.024
0.384
0.592
pe
0.000
0.627
0.373
ia
0.124
0.000
0.876
lc
0.063
0.384
0.553
ne
0.024
0.627
0.349
pg
0.000
0.780
0.220
ga
0.220
0.000
0.780
ic
0.124
0.384
0.492
le
0.063
0.627
0.310
ng
0.024
0.780
0.196
pi
0.000
0.876
0.124
ea
0.373
0.000
0.627
gc
0.220
0.384
0.396
ie
0.124
0.627
0.249
lg
0.063
0.780
0.157
ni
0.024
0.876
0.100
pl
0.000
0.937
0.063
ca
0.616
0.000
0.384
ec
0.373
0.384
0.243
ge
0.220
0.627
0.153
ig
0.124
0.780
0.096
li
0.063
0.876
0.061
nl
0.024
0.937
0.039
pn
0.000
0.976
0.024
Table VI
Colorimetric specifications of three sets of original Ostwald samples—representing a 24-step hue circuit.
100 step hue series (Ostwald original) (made available by Munsell Color Company)
pa series (Unesma, 1921) (made available by Munsell Color Company)
pa series (Ostwald Laboratory, 1935)* (made available by Dr. H. Zeishold)
x
y
B
DWL
Pe
x
y
B
DWL
Pe
x
y
B
DWL
Pe
00c
0.2167
0.1562
0.136
461.3
56.0
00
0.4188
0.4780
0.613
572.2
72.5
1
0.4265
0.4846
0.722
572.6
76.4
04c
.1887
.1760
.152
474.8
60.7
04
.4510
.4776
.575
575.8
81.0
2
.4544
.4612
.617
577.6
77.8
08c
.1939
.2143
.160
479.5
53.7
08
.4764
.4518
.471
580.4
81.0
3
.4784
.4367
.508
582.3
77.4
13c
.2012
.2545
.169
483.8
48.4
13
.5094
.4112
.348
587.9
79.0
4
.5074
.4137
.408
587.4
79.0
17c
.2075
.2699
.181
485.3
42.2
17
.5296
.3723
.246
594.8
73.9
5
.5333
.3860
.310
593.4
78.5
21c
.2123
.2846
.175
487.0
39.0
21
.5404
.3478
.197
602.6
70.1
6
.5570
.3537
.207
601.7
76.1
25c
.2171
.2978
.184
488.5
36.0
25
.5245
.3165
.147
616.5
57.4
7
.5516
.3158
.130
616.9
64.5
29c
.2239
.3284
.189
492.7
31.2
29
.4932
.2874
.124
493.3c
45.8
8
.4816
.2659
.122
494.5c
52.5
33c
.2376
.3639
.197
499.7
24.0
33
.4131
.2262
.107
501.8c
55.5
9
.3946
.2071
.091
507.7c
59.9
38c
.2810
.4440
.304
536.8
28.0
38
.3611
.2018
.101
520.6c
55.7
10
.3450
.1802
.079
545.0c
61.5
42c
.3253
.4715
.442
555.8
46.0
42
.3236
.1913
.088
545.0c
52.8
11
.2881
.1587
.068
557.6c
59.5
46c
.3569
.4746
.540
563.0
53.2
46
.2716
.1693
.082
562.0c
52.0
12
.2300
.1359
.058
402.0
57.9
50c
.4060
.4622
.665
572.0
61.7
50
.2044
.1389
.104
462.0
62.3
13
.1805
.1085
.069
464.4
74.7
54c
.4431
.4661
.637
576.0
76.0
54
.1837
.1821
.110
476.9
61.8
14
.1740
.1435
.096
472.7
70.3
58c
.4613
.4469
.574
579.7
75.7
58
.1928
.2245
.116
480.8
52.7
15
.1738
.1921
.125
478.9
63.6
63c
.4879
.4064
.431
587.1
71.7
63
.1959
.2374
.106
482.2
50.0
16
.1760
.2247
.139
482.6
58.6
67c
.5000
.3858
.368
591.4
69.5
67
.2000
.2573
.110
484.3
46.4
17
.1810
.2565
.135
485.2
53.3
71c
.5107
.3507
.259
600.4
63.0
71
.2048
.2767
.108
486.3
42.3
18
.1846
.2849
.140
487.9
49.2
75c
.4949
.3260
.216
609.6
52.1
75
.2088
.2980
.113
488.8
39.1
19
.1870
.3084
.138
490.2
46.4
79c
.4388
.2712
.173
495.2c
42.2
79
.2144
.3291
.117
492.6
34.6
20
.1945
.3428
.141
493.7
41.1
83c
.3985
.2372
.168
503.7c
52.4
83
.2295
.3772
.135
500.2
26.6
21
.2116
.4137
.160
503.4
32.2
88c
.3420
.1991
.176
533.4
53.2
88
.2669
.4677
.205
532.4
31.7
22
.2869
.4826
.265
543.4
39.8
92c
.3095
.1857
.152
545.0
52.5
92
.3032
.4911
.285
549.2
45.8
23
.3319
.5141
.445
556.3
59.3
96c
.2752
.1754
.135
561.5
50.1
96
.3574
.4968
.430
562.0
61.4
24
.3843
.5036
.618
566.0
70.2
On the basis of a spectrophotometric pigment identification method, it is believed that these samples are the same as those shown in the Ostwald Color Album arranged by J. Scott Taylor (Winsor and Newton, Ltd., London).
Table VII
Colorimetric specifications of original samples bearing Ostwald notations for two pairs of triangles, hues 04–54 and 25–75.