ArgyllCMS spectra viewer and converter

a*b* diagram

Spectra processed: 24, wavelength range: 410–740 nm.
CSV file | report: https://pozhvanov.ru/spectro?view_id=0000-xclr-chkr&legend=on

#	sRGB	R	G	B	H	S	B(V)	L	X	Y	Z	L*	a*	b*	λmin	λmax	Integral
1	#6d4c40	109 75	76 63	64 51	16 30	41 32	43 29	34 25	10.2	8.9	4.6	35.8	13	13	410	740	354.02 K
2	#bb8778	187 146	135 122	120 104	13 26	36 29	73 57	60 49	33.6	29.5	16.4	61.2	18.9	16.4	410	740	1286.54 K
3	#547294	84 87	114 93	148 125	212 231	43 30	58 49	45 42	14.5	15.7	22.8	46.6	-4	-22.4	630	437	586.95 K
4	#54653c	84 69	101 79	60 51	85 81	41 35	40 31	32 25	9.5	11.5	4.6	40.4	-12.2	20.8	410	533	310.65 K
5	#7976a3	121 108	118 100	163 140	244 252	28 29	64 55	55 47	20.5	19.4	28.1	51.1	9.3	-24	580	740	915.13 K
6	#55ac9b	85 113	172 148	155 139	168 165	51 24	67 58	50 51	24.5	33.4	27.6	64.5	-30.5	-0.1	653	507	909.44 K
7	#e17b2f	225 167	123 118	47 54	26 34	79 68	88 65	53 43	40.9	31.2	5	62.6	36.6	56.9	410	707	1198.77 K
8	#495dae	73 82	93 76	174 149	228 245	58 49	68 58	48 44	13.2	11.9	31.4	41.1	11.6	-46.6	577	740	797.81 K
9	#ca5463	202 144	84 85	99 82	352 3	58 43	79 56	56 44	30.9	20.3	10.6	52.1	48.6	16.6	537	707	1084.62 K
10	#603c6c	96 70	60 51	108 84	285 275	44 39	42 33	33 26	8.9	6.7	11.2	31.2	22.8	-21.5	540	740	492.22 K
11	#9eba40	158 142	186 167	64 74	74 76	66 56	73 65	49 47	34.5	43.1	9	71.7	-22.7	55.7	410	540	1040 K
12	#e6a125	230 181	161 151	37 59	39 45	84 67	90 71	52 47	48.6	43.4	5.9	71.8	19.3	68.3	410	717	1371.79 K
13	#254297	37 59	66 52	151 124	225 246	75 58	59 49	37 35	7.3	6.2	22.5	29.9	13.8	-50.7	603	447	443.22 K
14	#47954a	71 86	149 124	74 69	122 101	52 44	58 49	43 38	15.4	23.4	7.9	55.5	-37.2	31.7	410	527	514.82 K
15	#b33538	179 120	53 61	56 46	359 12	70 62	70 47	45 33	21.6	12.8	3.8	42.5	51.5	29.1	410	703	826.29 K
16	#edc814	237 199	200 190	20 66	50 56	92 67	93 78	50 52	59.4	60.4	7.3	82	3	80	410	713	1695.63 K
17	#c15396	193 143	83 84	150 126	323 317	57 41	76 56	54 45	30.9	19.9	23.2	51.7	50.2	-14.3	540	730	1398.65 K
18	#0086a4	0 77	134 109	164 143	191 211	100 46	64 56	32 43	13.2	18.7	29	50.4	-28.6	-26.6	710	483	622.92 K
19	#f3f2ee	243 239	242 239	238 235	48 60	2 2	95 94	94 93	85.8	89.1	71.1	95.6	-0.2	2.1	410	740	2914.23 K
20	#c7c8c9	199 187	200 188	201 189	210 210	1 1	79 74	78 74	55.5	57.8	48.1	80.6	-0.6	-0.5	410	457	1880.07 K
21	#a0a3a4	160 144	163 145	164 147	195 220	2 2	64 58	64 57	34.6	36.2	30.4	66.7	-0.9	-0.9	730	453	1165.26 K
22	#777777	119 100	119 100	119 100	0 0	0 0	47 39	47 39	17.8	18.5	15.3	50.1	-0.1	-0.1	737	457	593.94 K
23	#525455	82 66	84 66	85 67	200 240	4 1	33 26	33 26	8.4	8.8	7.5	35.6	-0.5	-1	727	450	283.47 K
24	#313132	49 37	49 37	50 38	240 240	2 3	20 15	19 15	3	3.1	2.6	20.3	0.1	-0.8	410	430	101.82 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.