Fabric colorfastness yog ib qho tseem ceeb qhia txog xim ruaj khov ntawm textiles thaum siv thiab ntxuav. Kev kuaj xim xim yog feem ntau ua raws li cov qauv thoob ntiaj teb thiab lub teb chaws, xws li ISO, AATCC (American Association of Textile Chemists and Dyers), thiab GB (Suav National Standard). Cov ntsiab lus tseem ceeb ntawm kev soj ntsuam suav nrog cov ntaub tiv thaiv rau ntau qhov chaw ib puag ncig xws li ntxuav, rub, hws, pom lub teeb, thiab ntxuav kom qhuav, kom ntseeg tau tias cov ntaub tsis ploj, hloov xim, lossis txav mus los thaum siv txhua hnub.
Cov khoom kuaj pom muaj xws li kev ntxuav ceev ceev, ntub thiab qhuav txhuam ceev ceev, hws ceev ceev, lub teeb nrawm, thiab ziab ceev ceev. Ntxuav ceev kuaj cov xim hloov ntawm cov ntaub tom qab ntxuav ntau; ntub thiab qhuav rubbing ceev ntsuas seb puas hloov xim tshwm sim thaum cov ntaub yog rubbed; perspiration fastness kuaj cov ntaub ruaj khov nyob rau hauv acidic los yog alkaline perspiration tej yam kev mob; thiab lub teeb ceev ceev ntsuas cov ntaub fading nyob rau hauv tshav ntuj los yog teeb pom kev zoo. Cov ntsuas no tau ua ke nrog kev muab qhab nia (feem ntau yog 1-5 cov ntsiab lus, nrog 5 qhov zoo tshaj plaws) los txiav txim siab cov ntaub zoo.
Fabric colorfastness kuaj kuj tseem hais txog kev ua haujlwm thiab kev siv tshwj xeeb. Cov khaub ncaws sab nraum zoov yuav tsum tiv taus lub teeb, dej, thiab hws; cov khaub ncaws ua lag luam yuav tsum muaj xim sai thiab yooj yim los ntxuav; cov menyuam yaus thiab tsev textile fabrics yuav tsum ua kom tau raws li ib puag ncig thiab kev nyab xeeb cov qauv los tiv thaiv kev tsiv teb tsaws ntawm cov xim tsis zoo. Kev kuaj xim nruj nruj kom ntseeg tau cov xim ruaj khov thiab kev nyab xeeb ntawm cov ntaub thoob plaws hauv kev tsim, muag, thiab siv, txhim kho cov kav ntev thiab zoo nkauj ntawm cov khoom tiav.