[css-color-4] Use OKLab XYZ <-> LMS recalculated for consistent whitepoint w3c#6642

Author: svgeesus

css-color-4/conversions.js

@@ -391,13 +391,16 @@ function LCH_to_Lab(LCH) {
 // OKLab and OKLCH
 // https://bottosson.github.io/posts/oklab/
 
+// XYZ <-> LMS matrices recalculated for consistent reference white
+// see https://github.com/w3c/csswg-drafts/issues/6642#issuecomment-943521484
+
 function XYZ_to_OKLab(XYZ) {
 	// Given XYZ relative to D65, convert to OKLab
 	var XYZtoLMS = [
-		[  0.8189330101,  0.3618667424,  -0.1288597137 ],
-		[  0.0329845436,  0.9293118715,   0.0361456387 ],
-		[  0.0482003018,  0.2643662691,   0.6338517070 ]
-    ];
+		[ 0.8190224432164319,    0.3619062562801221,   -0.12887378261216414  ],
+		[ 0.0329836671980271,    0.9292868468965546,     0.03614466816999844 ],
+		[ 0.048177199566046255,  0.26423952494422764,    0.6335478258136937  ]
+	];
 	var LMStoOKLab = [
 		[  0.2104542553,   0.7936177850,  -0.0040720468 ],
 		[  1.9779984951,  -2.4285922050,   0.4505937099 ],
@@ -412,10 +415,10 @@ function XYZ_to_OKLab(XYZ) {
 function OKLab_to_XYZ(OKLab) {
 	// Given OKLab, convert to XYZ relative to D65
 	var LMStoXYZ =  [
-        [  1.227013851103521026,    -0.5577999806518222383,  0.28125614896646780758  ],
-        [ -0.040580178423280593977,  1.1122568696168301049, -0.071676678665601200577 ],
-        [ -0.076381284505706892869, -0.42148197841801273055, 1.5861632204407947575   ]
-    ];
+		[  1.2268798733741557,  -0.5578149965554813,   0.28139105017721583 ],
+		[ -0.04057576262431372,  1.1122868293970594,  -0.07171106666151701 ],
+		[ -0.07637294974672142, -0.4214933239627914,   1.5869240244272418  ]
+	];
 	var OKLabtoLMS = [
         [ 0.99999999845051981432,  0.39633779217376785678,   0.21580375806075880339  ],
         [ 1.0000000088817607767,  -0.1055613423236563494,   -0.063854174771705903402 ],