ArgyllCMS spectra viewer and converter

a*b* diagram

Spectra processed: 24, wavelength range: 410–730 nm.
CSV file | report: https://pozhvanov.ru/spectro?view_id=0000-fake-chkr&legend=on

#	sRGB	R	G	B	H	S	B(V)	L	X	Y	Z	L*	a*	b*	λmin	λmax	Integral
1	#604031	96 64	64 52	49 39	19 31	49 39	38 25	28 20	7.5	6.4	2.9	30.5	12.9	14.9	417	727	236.16 K
2	#ac7e74	172 134	126 112	116 99	11 22	33 26	67 53	56 46	28.5	25.1	15.1	57.2	17.6	12.6	417	730	914.13 K
3	#4c698c	76 79	105 85	140 117	213 231	46 32	55 46	42 38	12.3	13.4	20.2	43.3	-3.6	-22.9	577	460	486.23 K
4	#545b32	84 65	91 71	50 44	70 73	45 38	36 28	28 23	8.3	9.6	3.4	37.1	-8.3	22.4	417	520	253.98 K
5	#6e6694	110 95	102 85	148 125	250 255	31 32	58 49	49 41	16.2	14.8	22.7	45.3	11.4	-24.4	573	450	615.73 K
6	#4aa696	74 106	166 142	150 133	170 165	55 25	65 56	47 49	22.1	30.7	25.7	62.3	-31.7	-0.6	717	503	841 K
7	#d87714	216 159	119 113	20 42	30 36	91 74	85 62	46 39	37.2	28.6	3.2	60.4	34.5	63.8	423	713	1162.58 K
8	#445097	68 71	80 64	151 125	231 247	55 49	59 49	43 37	10	8.8	22.9	35.7	12	-41.4	573	450	440.31 K
9	#bc4b5d	188 132	75 76	93 76	350 0	60 42	74 52	52 41	26.2	16.8	9.2	48.1	47.6	14	567	710	890.16 K
10	#5e2557	94 62	37 36	87 65	307 294	61 45	37 25	26 20	6.9	4.4	7.1	24.9	31.7	-17.8	567	680	254.13 K
11	#9fac13	159 135	172 152	19 54	65 70	89 64	67 60	37 40	31.1	37.4	5	67.6	-17.5	65.7	427	520	897.44 K
12	#da8f10	218 166	143 133	16 48	38 43	93 71	85 65	46 42	41.2	35.4	4	66.1	22.9	68.5	427	713	1242.64 K
13	#293880	41 51	56 44	128 102	230 247	68 57	50 40	33 29	5.6	4.6	15.8	25.7	13.8	-43.5	570	450	255.81 K
14	#388735	56 73	135 109	53 53	118 99	61 51	53 43	37 32	11.6	18.5	5	50.1	-38	35.5	423	510	406.29 K
15	#a52936	165 108	41 52	54 43	354 8	75 60	65 42	40 30	17.8	10.2	3.4	38.2	50.9	24.6	563	717	619.27 K
16	#f0c300	240 199	195 185	0 60	49 54	100 70	94 78	47 51	58.9	58.4	6.2	81	6.3	82.8	420	717	1694.67 K
17	#b23e86	178 127	62 68	134 110	323 317	65 46	70 50	47 38	24.7	14.8	18.3	45.4	52.9	-15.2	567	677	895.22 K
18	#007593	0 70	117 93	147 125	192 215	100 44	58 49	29 38	10.8	14.5	22.7	44.9	-21.5	-25.1	633	483	475.82 K
19	#e3e3e2	227 220	227 221	226 220	60 120	0 0	89 87	89 86	74.1	77	63.1	90.3	-0.2	0.4	417	480	2397 K
20	#bfbfbf	191 177	191 177	191 178	0 240	0 1	75 70	75 70	50	51.9	43	77.2	0.1	-0.3	417	480	1619.94 K
21	#999d9f	153 137	157 139	159 141	200 210	4 3	62 55	61 55	31.7	33.2	28.4	64.3	-1.1	-1.7	417	477	1037.78 K
22	#65676a	101 83	103 84	106 87	216 225	5 5	42 34	41 33	13	13.5	11.8	43.5	-0.1	-2.1	573	480	428.96 K
23	#474a4d	71 57	74 58	77 60	210 220	8 5	30 24	29 23	6.5	6.8	6.1	31.3	-1	-2.1	573	473	216.35 K
24	#2b2929	43 32	41 31	41 31	0 0	5 3	17 13	16 12	2.2	2.3	1.9	16.9	0.8	0.3	417	730	73.09 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.