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# The CIEDE2000 color difference formula - Michel Leonard’s Samples # Project URL: https://ciede2000.pages-perso.free.fr/ # High-Precision: these 40 tests are designed to reveal implementation errors # Columns: # L1, a1, b1 -> Lab color components of the first color # L2, a2, b2 -> Lab color components of the second color # kL, kC, kH -> Weighting factors for lightness, chroma and hue # CIE ΔE2000 -> Computed color difference using the CIEDE2000 formula (compliance with Bruce Lindbloom’s JavaScript implementation) # CIE ΔE2000 -> Computed color difference using the CIEDE2000 formula (compliance with Gaurav Sharma’s MATLAB implementation) L1,a1,b1,L2,a2,b2,kL,kC,kH,CIEDE2000v1,CIEDE2000v2 95.3,58.8,2.1,95.7,61.9,-1.7,1.0,1.0,1.0,1.94085923041943820907,1.94085227194482418169 78.7,65.2,-2.9,77.5,60.7,2.8,1.0,1.0,1.0,2.91989529567114087822,2.91988525261658605311 88.3,126.1,-1.7,89.3,109.1,4.6,1.0,1.0,0.9,3.52575069135331917409,3.52573735080764876312 76.8,103.9,6.6,73.6,116.1,-3.9,1.0,1.0,0.9,4.85910095282673306855,4.85908859516939575581 79.5,66.7,4.6,76.1,81.8,-5.0,1.0,0.9,1.1,5.76099150475162379453,5.76096924936866172022 59.2,71.8,5.1,58.6,94.1,-4.7,1.0,0.9,1.1,6.26446979481597228780,6.26444558597530434010 20.5,119.1,8.1,19.4,96.5,-6.4,1.0,0.9,1.0,6.33145635344967449655,6.33148705084895521235 29.6,72.9,7.1,33.3,113.4,-5.1,1.0,1.1,1.1,8.68695997741328123613,8.68693753419288109384 86.3,88.0,-4.8,78.7,118.6,7.4,1.0,0.9,1.0,8.83363506762574415824,8.83366024958667014071 98.8,71.4,6.4,93.9,43.4,-3.3,1.0,1.1,0.9,9.06652292034467328084,9.06655677652780030117 2.2,97.5,-8.4,7.0,73.3,10.5,1.0,1.1,0.9,9.64943880051260659224,9.64941494316372210575 43.8,57.1,-5.2,44.1,91.2,13.8,1.0,1.1,1.1,9.74596427375642726535,9.74599456055264884188 87.5,94.2,-12.5,85.5,71.4,14.8,1.0,1.1,1.0,11.50838166559227916653,11.50835974496583671561 6.5,54.8,-3.2,14.5,99.9,6.0,0.9,1.0,1.0,12.02882579429005156853,12.02885434991815202119 49.3,115.6,15.8,55.5,68.6,-3.7,0.9,1.0,1.0,13.00482889762819009845,13.00485163892002509853 93.9,125.4,-7.6,98.1,60.4,3.9,0.9,1.0,0.9,13.53732246206312746009,13.53728420335438970854 51.2,48.7,12.3,47.1,68.3,-15.2,0.9,0.9,1.1,13.65210535595789555755,13.65206573841337269448 75.4,72.4,14.1,66.1,42.7,-7.6,0.9,0.9,1.1,15.01858617580990805048,15.01863373764194466828 92.0,83.5,-17.2,94.0,55.0,12.5,0.9,1.0,0.9,15.33433138237918558308,15.33427919695440244764 2.6,47.0,-7.3,5.8,117.6,19.6,0.9,1.1,1.1,16.12496252255085502475,16.12502659883752889818 47.7,24.9,-10.5,42.7,38.4,16.9,0.9,1.1,1.1,16.16188451930645718378,16.16192477450090184896 73.9,58.9,-10.7,78.8,99.1,26.0,0.9,0.9,1.0,17.13706181605960745840,17.13710455668721354362 17.0,103.1,17.5,6.2,47.2,-7.2,0.9,1.1,0.9,17.15502364533678697347,17.15508320784189811337 61.3,65.6,14.8,73.3,89.2,-18.8,0.9,0.9,1.0,17.81338636557549685611,17.81334827962618422763 24.1,31.9,11.3,26.1,76.3,-17.3,0.9,1.1,1.0,18.06284088259899451733,18.06280635743619223791 76.6,42.5,18.7,73.1,25.0,-9.2,0.9,1.1,0.9,18.56371424691992320981,18.56375175757327048081 58.4,53.4,17.4,73.6,84.8,-24.6,1.1,0.9,1.1,20.97701098095782588640,20.97696265633271514383 34.3,51.7,-16.4,37.9,95.8,32.8,1.1,1.0,1.0,21.30472695141261612657,21.30480230097303868981 11.8,33.3,9.9,15.6,98.7,-24.7,1.1,1.0,1.0,21.38255904461508639978,21.38248563461511850021 38.3,112.8,-19.9,28.7,35.1,6.4,1.1,1.0,0.9,21.81150150951723601095,21.81142191433416683199 31.0,40.0,-10.5,19.9,95.1,32.7,1.1,0.9,1.1,22.51208149151830503368,22.51213697394075791030 65.1,119.6,34.0,52.8,75.5,-20.6,1.1,1.0,0.9,23.51896200161117138039,23.51902558300420726187 71.7,117.3,-41.7,67.4,64.9,23.1,1.1,0.9,1.0,24.41586908953993753146,24.41576877980548038990 20.1,23.4,-6.6,12.8,83.4,31.1,1.1,0.9,1.0,24.92218272063192672329,24.92224139197610431656 40.1,15.7,8.6,49.8,72.6,-34.6,1.1,1.1,1.1,25.32169561894007569524,25.32162387362604456976 74.4,33.6,14.7,89.2,99.4,-43.2,1.1,1.1,1.1,25.90852187537030209305,25.90841306621602456028 37.2,118.5,36.4,22.4,32.1,-9.4,1.1,1.1,0.9,26.37618409498421573915,26.37628386184765567677 44.5,112.5,44.0,50.3,28.9,-9.4,1.1,1.1,0.9,26.71479772759133226984,26.71487885694120816828 89.0,122.1,53.2,70.3,90.0,-33.1,1.1,1.1,1.0,29.19969941395083530767,29.19973049970667885284 24.6,0.0,0.0,71.4,0.0,0.0,1.1,1.1,1.0,42.0306858757802182373009,42.0306858757802182373009