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Select a file with spectral data:

 

 
 
 
 
 
 
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drop a file here
(these features are slow with numerous spectra)
a*b* diagram
Spectra processed: 18, wavelength range: 360–740 nm.
CSV file | report: https://pozhvanov.com/spectro?view_id=Light_sources&legend=on
#sRGBRGBHSB(V)LXYZL*a*b*λminλmaxIntegral
Cloudy#ffffff255
255
255
255
255
255
0
0
0
0
100
100
100
100
165.2177.4183.7124.4-7-19.136749387.63 K
Cloudy#ffffff255
255
255
255
255
255
0
0
0
0
100
100
100
100
174186.9193.6126.9-7.1-19.438049392.3 K
Cloudy#ffffff255
255
255
255
255
255
0
0
0
0
100
100
100
100
153.6164.9170.4121-6.7-18.536349781.41 K
E-saver#ffb863255
215
184
179
99
99
33
41
61
54
100
84
69
62
66.358.715.181.122.653.836361318.9 K
E-saver#ffbd66255
221
189
184
102
102
34
41
60
54
100
87
70
63
69.861.915.982.922.854.936361319.94 K
E-saver#ffbe65255
222
190
186
101
102
35
42
60
54
100
87
70
64
70.662.81683.322.655.636361320.15 K
Flourescent#ffea8b255
255
234
240
139
142
49
52
45
44
100
100
77
78
11299.728.999.926.258.836361332.44 K
Flourescent#ffea8e255
255
234
240
142
144
49
52
44
44
100
100
78
78
111.899.429.699.826.357.436361332.31 K
Flourescent#fff898255
255
248
255
152
157
56
60
40
38
100
100
80
81
128.7114.334.5105.327.759.536361337.03 K
Petzl(M)#858c98133
119
140
121
152
133
218
231
13
11
60
52
56
49
24.825.925.457.9-0.8-7.63634608.94 K
Petzl(M)#868e9b134
121
142
123
155
136
217
232
14
11
61
53
57
50
25.626.826.558.7-0.8-83704609.27 K
Petzl(M)#858d9a133
120
141
122
154
134
217
231
14
10
60
53
56
50
25.126.325.958.3-0.8-7.83704609.09 K
Petzl(H)#a4aebe164
155
174
158
190
174
217
231
14
11
75
68
69
65
39.941.841.370.8-1.2-9.336346014.33 K
Petzl(H)#a2acbc162
153
172
156
188
171
217
230
14
11
74
67
69
64
3940.840.370.1-1.3-9.137346014.02 K
Petzl(H)#a1abba161
151
171
154
186
169
216
230
13
11
73
66
68
63
38.24039.569.5-1.2-9.137346013.72 K
MT24-EX#edffff237
254
255
255
255
255
180
180
7
0
100
100
96
100
97.3101.8112.6100.7-1.5-20.739747050 K
MT24-EX#ddf3ff221
233
243
239
255
255
201
224
13
9
100
100
93
96
83.787.997.495.1-2-19.837747043.1 K
MT24-EX#e2f6ff226
238
246
243
255
255
199
222
11
7
100
100
94
97
86.590.610096.2-1.5-19.736047044.45 K
 

Use ArgyllCMS to acquire spectra:

#   reflectance spectrum
spotread -v -s -H "file_refl.sp"

#   transmission spectrum
spotread -v -s -H -t "file_trans.sp"

#   emission spectrum
spotread -v -s -H -e "file_emiss.sp"
#   flash emission spectrum
spotread -v -s -H -f "file_flash.sp"
#   ambient light spectrum
spotread -v -s -H -a "file_ambnt.sp"

Do not know how to start?
Try viewing ambient light spectrum or compare cloudy sky with flashlight, macro flash and two different lamps.
Found bugs, have suggestions, etc.? You know where to complain.
Application manual is coming later this year.