ColorChecker RGB Summaries, Spreadsheets and Lab TIFF File

Here are summaries of the ColorChecker RGB values for each of the reference RGB models. They were calculated with the ColorChecker Calculator. The tables are laid out in the same 6 x 4 array as the ColorChecker chart, and within each cell, the color components are shown in red, green, blue order from top to bottom.

Note that a few of the RGB components have negative values (shown in red below), meaning the color lies outside the gamut (at least the gamut defined by the bounds [0, 255]). Here is an illustration showing the sRGB color gamut in Lab color space. The 24 ColorChecker colors are plotted as spots. On the left you can see that the Cyan patch is out-of-gamut.

Out-of-gamut example

If you wish to compare your own RGB values (say from a digital camera picture of a ColorChecker chart) to each of the RGB models to see which is closest, I have prepared two Excel spreadsheets to perform these calculations for you. They are available as downloads in zip format. One spreadsheet does the comparison by converting the ideal Lab reference colors to RGB (using each of the RGB reference models as an assumed profile) and then compares these RGB values against your RGB values. The other spreadsheet converts your RGB values to Lab (using each of the RGB reference models as an assumed profile) and then compares these Lab values against the reference Lab values.

I have prepared a computer generated Lab TIFF file of the ColorChecker chart, using the Lab values obtained from the ColorChecker Calculator. It may be downloaded in either zip (16K) or sit (18K) format.


Adobe (1998) • Apple • BestRGB • Beta RGB • BruceRGB • CIE • ColorMatch • DonRGB4 • ECI v2 • Ekta Space PS5 • NTSC • PAL / SECAM • ProPhoto • SMPTE-C • sRGB • WideGamut

Adobe (1998)
106
81
67
182
149
130
103
122
154
95
108
69
129
128
174
133
189
170
194
121
48
79
91
162
170
85
97
84
62
105
167
186
73
213
162
57
54
62
149
101
148
76
152
48
58
228
199
55
164
83
144
63
134
163
242
241
236
200
200
199
159
160
159
122
121
120
84
84
84
53
53
53
Apple
94
62
49
179
132
110
77
104
140
72
90
48
110
109
163
90
179
154
203
100
22
56
71
151
176
62
79
71
43
89
146
176
37
220
145
22
34
43
137
63
134
49
156
25
42
232
189
-18
167
59
131
-24
117
150
239
239
232
189
189
189
144
144
144
103
103
102
65
66
66
37
37
37
BestRGB
105
85
69
181
154
133
105
121
151
94
105
73
131
130
170
135
181
172
191
134
64
84
93
157
169
103
99
85
68
102
164
181
90
209
169
78
61
66
144
101
140
84
152
75
62
224
201
85
165
102
141
74
126
161
242
241
237
200
200
199
159
160
159
121
121
120
84
84
84
53
53
53
Beta RGB
104
82
69
180
151
133
106
122
152
94
106
72
132
129
171
137
184
171
189
127
60
85
94
159
168
94
99
85
66
103
165
183
84
207
165
71
62
66
146
102
144
81
150
61
62
222
199
76
163
93
143
76
130
162
242
241
237
200
200
199
159
160
159
121
121
120
84
84
84
53
53
53
BruceRGB
111
81
67
189
149
130
98
122
154
91
108
69
129
128
173
115
189
170
207
121
49
76
91
162
184
85
97
89
62
105
162
186
74
223
162
58
52
62
149
86
148
76
167
48
58
234
199
56
177
83
144
13
134
163
242
241
236
200
200
199
159
160
159
122
121
120
84
84
84
53
53
53
CIE RGB
111
84
69
190
153
132
95
123
151
94
103
73
126
133
170
119
180
170
208
132
64
67
98
157
184
103
99
86
70
104
168
177
88
225
165
77
34
74
144
93
138
83
168
75
62
238
196
82
176
105
143
51
56
223
242
241
236
200
200
199
159
160
159
122
121
120
84
84
84
53
53
53
ColorMatch
93
62
48
179
131
110
78
104
140
71
90
48
113
108
162
93
178
156
200
101
17
59
71
151
176
60
78
72
44
88
144
176
38
217
147
17
38
43
137
62
134
51
157
21
41
229
189
-18
169
58
129
9
115
152
239
239
232
189
189
189
144
144
144
103
103
102
65
66
66
37
37
37
DonRGB4
105
83
69
181
152
133
105
122
151
94
106
73
131
130
170
135
183
172
191
129
62
84
94
157
169
96
98
85
66
102
164
182
88
209
166
75
61
67
145
100
143
83
152
65
61
224
199
81
165
96
141
73
129
162
242
241
237
200
200
199
159
160
159
121
121
120
84
84
84
53
53
53
ECI v2
114
88
72
190
160
142
113
130
162
101
118
73
141
135
182
145
195
179
199
136
57
89
94
170
179
94
108
92
63
113
174
196
81
216
176
67
60
56
158
109
159
81
162
50
65
229
210
67
174
89
154
76
139
172
244
244
239
207
207
207
169
169
169
131
131
130
90
90
90
53
52
53
Ekta Space PS5
106
82
69
183
151
133
105
123
152
92
105
72
133
131
171
129
183
171
195
127
60
86
96
159
174
95
99
88
68
103
160
180
84
211
164
71
64
71
146
93
142
81
157
64
62
224
197
76
170
97
143
68
131
162
242
241
237
200
200
199
159
160
159
121
121
120
84
84
84
53
53
53
NTSC
105
82
69
180
152
132
106
119
153
94
110
70
131
123
173
135
189
169
191
128
59
84
82
160
168
87
100
86
57
105
165
191
78
209
169
68
61
47
148
101
151
77
150
53
63
223
207
68
163
79
145
71
129
161
242
242
237
200
200
200
159
160
160
121
121
120
84
84
84
53
53
53
PAL / SECAM
113
81
66
192
149
129
95
122
155
89
108
66
129
128
176
105
189
169
213
121
40
74
91
165
190
85
98
91
62
107
160
186
59
227
162
43
51
62
152
78
148
69
172
48
59
236
199
21
182
83
147
-42
134
165
242
241
236
200
200
199
159
160
159
122
121
120
84
84
84
53
53
53
ProPhoto
81
66
52
160
138
116
95
102
134
74
86
56
119
111
155
128
167
157
163
116
48
78
74
140
142
85
80
68
51
83
143
168
73
184
155
61
59
49
126
84
123
67
122
57
45
202
191
69
142
84
123
76
108
145
238
238
233
189
189
189
144
144
144
103
103
102
65
66
66
37
37
37
SMPTE-C
116
80
67
196
149
129
91
122
155
88
109
67
128
127
175
90
190
169
221
119
44
71
90
164
198
81
98
93
60
107
158
188
64
234
161
49
47
59
151
65
150
71
181
40
59
241
200
38
190
78
146
-65
134
164
242
242
236
200
200
199
159
160
159
122
121
120
84
84
84
53
53
53
sRGB
115
80
64
195
151
130
94
123
156
88
108
65
130
129
177
100
190
171
217
122
37
72
91
165
194
84
98
91
59
107
160
188
60
230
163
42
46
60
153
71
150
69
177
44
56
238
200
27
187
82
148
-49
135
166
243
242
237
201
201
201
161
161
161
122
122
121
83
83
83
50
49
50
WideGamut
103
84
68
179
153
132
105
122
152
96
104
71
129
131
172
142
180
171
187
132
58
81
96
159
163
103
99
82
70
103
170
179
82
207
167
69
54
71
147
109
139
80
146
75
61
224
198
72
158
104
143
79
128
163
242
241
237
200
200
199
159
160
159
121
121
120
84
84
84
53
53
53
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