2f:T494,

${picked_color_serialized}

${ ( is_imaginary(picked_color_object) ? htl.html`🚨 This color is imaginary, and impossible to create or see` : ( !(picked_color_object.inGamut("rec2020")) ? htl.html`⛔️ This color is outside of the Rec.2020 gamut, and irreproducable on any display` : ( !(picked_color_object.inGamut("p3")) ? htl.html`⚠️ This color is outside of the P3 gamut, and irreproducable on consumer displays` : '' ) ) ) }

30:T74cd,// CIE 1931 2 Degree Standard Observer // http://www-cvrl.ucsd.edu/cmfs.htm // I got it from https://github.com/facelessuser/coloraide/blob/bcfcdb5a6f75964f2af3cde66605c6dbec3cc636/coloraide/cmfs.py#L38 CIE_1931_2DEG = ({ 360: [0.000129900000, 0.000003917000, 0.000606100000], 361: [0.000145847000, 0.000004393581, 0.000680879200], 362: [0.000163802100, 0.000004929604, 0.000765145600], 363: [0.000184003700, 0.000005532136, 0.000860012400], 364: [0.000206690200, 0.000006208245, 0.000966592800], 365: [0.000232100000, 0.000006965000, 0.001086000000], 366: [0.000260728000, 0.000007813219, 0.001220586000], 367: [0.000293075000, 0.000008767336, 0.001372729000], 368: [0.000329388000, 0.000009839844, 0.001543579000], 369: [0.000369914000, 0.000011043230, 0.001734286000], 370: [0.000414900000, 0.000012390000, 0.001946000000], 371: [0.000464158700, 0.000013886410, 0.002177777000], 372: [0.000518986000, 0.000015557280, 0.002435809000], 373: [0.000581854000, 0.000017442960, 0.002731953000], 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[0.012948680000, 0.004676404000, 0.000000000000], 699: [0.012129200000, 0.004380075000, 0.000000000000], 700: [0.011359160000, 0.004102000000, 0.000000000000], 701: [0.010629350000, 0.003838453000, 0.000000000000], 702: [0.009938846000, 0.003589099000, 0.000000000000], 703: [0.009288422000, 0.003354219000, 0.000000000000], 704: [0.008678854000, 0.003134093000, 0.000000000000], 705: [0.008110916000, 0.002929000000, 0.000000000000], 706: [0.007582388000, 0.002738139000, 0.000000000000], 707: [0.007088746000, 0.002559876000, 0.000000000000], 708: [0.006627313000, 0.002393244000, 0.000000000000], 709: [0.006195408000, 0.002237275000, 0.000000000000], 710: [0.005790346000, 0.002091000000, 0.000000000000], 711: [0.005409826000, 0.001953587000, 0.000000000000], 712: [0.005052583000, 0.001824580000, 0.000000000000], 713: [0.004717512000, 0.001703580000, 0.000000000000], 714: [0.004403507000, 0.001590187000, 0.000000000000], 715: [0.004109457000, 0.001484000000, 0.000000000000], 716: 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[0.001076430000, 0.000388718400, 0.000000000000], 735: [0.000999949300, 0.000361100000, 0.000000000000], 736: [0.000928735800, 0.000335383500, 0.000000000000], 737: [0.000862433200, 0.000311440400, 0.000000000000], 738: [0.000800750300, 0.000289165600, 0.000000000000], 739: [0.000743396000, 0.000268453900, 0.000000000000], 740: [0.000690078600, 0.000249200000, 0.000000000000], 741: [0.000640515600, 0.000231301900, 0.000000000000], 742: [0.000594502100, 0.000214685600, 0.000000000000], 743: [0.000551864600, 0.000199288400, 0.000000000000], 744: [0.000512429000, 0.000185047500, 0.000000000000], 745: [0.000476021300, 0.000171900000, 0.000000000000], 746: [0.000442453600, 0.000159778100, 0.000000000000], 747: [0.000411511700, 0.000148604400, 0.000000000000], 748: [0.000382981400, 0.000138301600, 0.000000000000], 749: [0.000356649100, 0.000128792500, 0.000000000000], 750: [0.000332301100, 0.000120000000, 0.000000000000], 751: [0.000309758600, 0.000111859500, 0.000000000000], 752: [0.000288887100, 0.000104322400, 0.000000000000], 753: [0.000269539400, 0.000097335600, 0.000000000000], 754: [0.000251568200, 0.000090845870, 0.000000000000], 755: [0.000234826100, 0.000084800000, 0.000000000000], 756: [0.000219171000, 0.000079146670, 0.000000000000], 757: [0.000204525800, 0.000073858000, 0.000000000000], 758: [0.000190840500, 0.000068916000, 0.000000000000], 759: [0.000178065400, 0.000064302670, 0.000000000000], 760: [0.000166150500, 0.000060000000, 0.000000000000], 761: [0.000155023600, 0.000055981870, 0.000000000000], 762: [0.000144621900, 0.000052225600, 0.000000000000], 763: [0.000134909800, 0.000048718400, 0.000000000000], 764: [0.000125852000, 0.000045447470, 0.000000000000], 765: [0.000117413000, 0.000042400000, 0.000000000000], 766: [0.000109551500, 0.000039561040, 0.000000000000], 767: [0.000102224500, 0.000036915120, 0.000000000000], 768: [0.000095394450, 0.000034448680, 0.000000000000], 769: [0.000089023900, 0.000032148160, 0.000000000000], 770: [0.000083075270, 0.000030000000, 0.000000000000], 771: [0.000077512690, 0.000027991250, 0.000000000000], 772: [0.000072313040, 0.000026113560, 0.000000000000], 773: [0.000067457780, 0.000024360240, 0.000000000000], 774: [0.000062928440, 0.000022724610, 0.000000000000], 775: [0.000058706520, 0.000021200000, 0.000000000000], 776: [0.000054770280, 0.000019778550, 0.000000000000], 777: [0.000051099180, 0.000018452850, 0.000000000000], 778: [0.000047676540, 0.000017216870, 0.000000000000], 779: [0.000044485670, 0.000016064590, 0.000000000000], 780: [0.000041509940, 0.000014990000, 0.000000000000], 781: [0.000038733240, 0.000013987280, 0.000000000000], 782: [0.000036142030, 0.000013051550, 0.000000000000], 783: [0.000033723520, 0.000012178180, 0.000000000000], 784: [0.000031464870, 0.000011362540, 0.000000000000], 785: [0.000029353260, 0.000010600000, 0.000000000000], 786: [0.000027375730, 0.000009885877, 0.000000000000], 787: [0.000025524330, 0.000009217304, 0.000000000000], 788: 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[0.000006732475, 0.000002431220, 0.000000000000], 807: [0.000006276423, 0.000002266531, 0.000000000000], 808: [0.000005851304, 0.000002113013, 0.000000000000], 809: [0.000005455118, 0.000001969943, 0.000000000000], 810: [0.000005085868, 0.000001836600, 0.000000000000], 811: [0.000004741466, 0.000001712230, 0.000000000000], 812: [0.000004420236, 0.000001596228, 0.000000000000], 813: [0.000004120783, 0.000001488090, 0.000000000000], 814: [0.000003841716, 0.000001387314, 0.000000000000], 815: [0.000003581652, 0.000001293400, 0.000000000000], 816: [0.000003339127, 0.000001205820, 0.000000000000], 817: [0.000003112949, 0.000001124143, 0.000000000000], 818: [0.000002902121, 0.000001048009, 0.000000000000], 819: [0.000002705645, 0.000000977058, 0.000000000000], 820: [0.000002522525, 0.000000910930, 0.000000000000], 821: [0.000002351726, 0.000000849251, 0.000000000000], 822: [0.000002192415, 0.000000791721, 0.000000000000], 823: [0.000002043902, 0.000000738090, 0.000000000000], 824: [0.000001905497, 0.000000688110, 0.000000000000], 825: [0.000001776509, 0.000000641530, 0.000000000000], 826: [0.000001656215, 0.000000598090, 0.000000000000], 827: [0.000001544022, 0.000000557575, 0.000000000000], 828: [0.000001439440, 0.000000519808, 0.000000000000], 829: [0.000001341977, 0.000000484612, 0.000000000000], 830: [0.000001251141, 0.000000451810, 0.000000000000] })31:[] 2d:{"title":"OKLCH picker","cells":[{"id":0,"value":"# OKLCH picker\n## that warns about extreme colors","pinned":false,"hidden":false,"mode":"md"},{"id":89,"value":"$2f","pinned":false,"hidden":false,"mode":"html"},{"id":79,"value":"viewof l = Inputs.range([0, 1], {label: \"Lightness\", step: 0.001})","pinned":false,"hidden":false,"mode":"ojs"},{"id":81,"value":"viewof c = Inputs.range([0, 1], {label: \"Chroma\", value: 0.2, step: 0.001})","pinned":false,"hidden":false,"mode":"ojs"},{"id":86,"value":"viewof h = Inputs.range([0, 360], {label: \"Hue\", step: 0.1})","pinned":false,"hidden":false,"mode":"ojs"},{"id":106,"value":"Plot.plot({\n width: 200,\n height: 200,\n marks: [\n // Spectral locus\n Plot.line(Object.values(CIE_1931_2DEG), {x: (d) => XYZ_to_xyY(d)[0], y: (d) => XYZ_to_xyY(d)[1], fill: '#eee'}),\n \n // THESE ARE TOO CONFUSING when they don't show the in=gamut xyz at the current Lightness\n // Rec.2020\n // Plot.line([\n // {x: 0.708, y: 0.292},\t\t\t\t\t\n // {x: 0.170, y: 0.797},\n // {x: 0.131, y: 0.046}\n // ], { x: 'x', y: 'y', fill: '#ddd' }),\n // DCI-P3 - ditto\n // Plot.line([\n // {x: 0.680, y: 0.320},\n // {x: 0.265, y: 0.690},\n // {x: 0.150, y: 0.060}\n // ], { x: 'x', y: 'y', fill: '#ccc' }),\n\n // picked color\n Plot.dot([color_to_xyY( picked_color_object )], {x: d=>d[0], y: d=>d[1], r: 5, fill: picked_color_serialized})\n ]\n})","pinned":false,"hidden":false,"mode":"ojs"},{"id":27,"value":"Color = (await import('https://colorjs.io/dist/color.js')).default","pinned":false,"hidden":false,"mode":"ojs"},{"id":5,"value":"$30","pinned":false,"hidden":false,"mode":"ojs"},{"id":9,"value":"// https://observablehq.com/@tmcw/understanding-point-in-polygon\npoint_in_polygon = function (point, vs) {\n // ray-casting algorithm based on\n // http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html\n\n var x = point[0], y = point[1];\n\n var inside = false;\n for (var i = 0, j = vs.length - 1; i < vs.length; j = i++) {\n var xi = vs[i][0], yi = vs[i][1];\n var xj = vs[j][0], yj = vs[j][1];\n\n var intersect = ((yi > y) != (yj > y))\n && (x < (xj - xi) * (y - yi) / (yj - yi) + xi);\n if (intersect) inside = !inside;\n }\n\n return inside;\n};","pinned":false,"hidden":false,"mode":"ojs"},{"id":110,"value":"XYZ_to_xyY = function([x,y,z]) {\n\n // black\n // \"Watch out for black...In that case, you may want to set x and y to the chromaticity coordinates of your reference white.\" - http://www.brucelindbloom.com/index.html?Eqn_XYZ_to_xyY.html\n if (( x + y + z ) == 0) {\n return [0.3127138721, 0.3582521716, 0] // d65\n }\n \n return [\n x / ( x + y + z ),\n y / ( x + y + z ),\n y\n ];\n \n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":42,"value":"color_to_xyY = function(color) {\n \n // does this need to use E as a reference white, instead? if the xy diagram doesn't depend on white point (I didn't think it did...) why is XYZ white-point specific?\n \n return XYZ_to_xyY(color.to('xyz-d65').coords);\n \n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":97,"value":"picked_color_serialized = `oklch(${l} ${c} ${h}deg)`","pinned":false,"hidden":false,"mode":"ojs"},{"id":193,"value":"picked_color_object = new Color(picked_color_serialized)","pinned":false,"hidden":false,"mode":"ojs"},{"id":14,"value":"is_imaginary = function(color) {\n\n const [x,y,] = color_to_xyY(color);\n\n // non-linear interpolation between points might be nice\n return !( point_in_polygon(\n [x,y], \n Object.values(CIE_1931_2DEG).map((xyz) => XYZ_to_xyY(xyz).slice(0, 2))\n ) );\n\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":211,"value":"","pinned":false,"hidden":false,"mode":"html"}],"files":"$W31","stdlib":"1","titling":"auto"}