ISO/CIE INTERNATIONAL STANDARD 11664-6 Second edition 2022-08 Colorimetry - Part 6: CIEDE2000 colour-difference formula Colorimétrie - Partie 6: Formule de la difference de couleur CIEDE2000 Reference number IS0/CIE 11664-6:2022(E) cie ISO @ IS0/CIE 2022 IS0/CIE 11664-6:2022(E) COPYRIGHT PROTECTED DOCUMENT @ IS0/CIE2022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISo at the address below orIso's memberbody inthecountryof therequester ISO copyright office CIE Central Bureau CP 401 : Ch. de Blandonnet 8 BabenbergerstraBe 9/9A · A-1010 Vienna CH-1214Vernier,Geneva Phone:+41227490111 Phone:+4317143187 Fax: +41 22 749 09 47 Email: copyright@iso.org Email: ciecb@cie.co.at Website: www.iso.org Website:www.cie.co.at Published in Switzerland ii @ IS0/CIE 2022 - All rights reserved