ASTM_D_1535_-_14_2018.pdf

Designation:D153514(Reapproved 2018)Standard Practice forSpecifying Color by the Munsell System1This standard is issued under the fixed designation D1535;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This practice provides a means of specifying the colorsof objects in terms of the Munsell color order system,a systembased on the color-perception attributes hue,lightness,andchroma.The practice is limited to opaque objects,such aspainted surfaces viewed in daylight by an observer havingnormal color vision.This practice provides a simple visualmethod as an alternative to the more precise and more complexmethod based on spectrophotometry and the CIE system(seePractices E308 and E1164).Provision is made for conversionof CIE data to Munsell notation.1.2 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1729 Practice for Visual Appraisal of Colors and ColorDifferences of Diffusely-Illuminated Opaque MaterialsD3134 Practice for Establishing Color and Gloss TolerancesE284 Terminology of AppearanceE308 Practice for Computing the Colors of Objects by Usingthe CIE SystemE1164 Practice for Obtaining Spectrometric Data for Object-Color Evaluation3.Terminology3.1 Terms and definitions in Terminology E284 are appli-cable to this practice.3.2 Definitions:3.2.1 Munsell notation,n(1)the Munsell hue,value,andchroma assigned to the color of a specimen by visuallycomparing the specimen to the chips in the Munsell Book ofColor;3(2)a notation in the Munsell color system,derivedfrom luminous reflectance factor Y and chromaticity coordi-nates x and y,in the CIE system for standard illuminant C,bythe use of scales defined by the Optical Society of AmericaSubcommittee on the Spacing of the Munsell Colors(1).43.2.1.1 DiscussionThe Munsell notation is written as acombination of letters and numbers by which the color of anopaque object may be specified with respect to Munsell hue H,Munsell value V,and Munsell chroma C,written in the form HV/C.3.2.2 hue,nthe attribute of color perception by means ofwhich a color is judged to be red,orange,yellow,green,blue,purple,or intermediate between adjacent pairs of these,con-sidered in a closed ring(red and purple being an adjacent pair).3.2.3 Munsell hue,nan attribute of color used in theMunsell color system to indicate the hue of a specimen viewedin daylight.3.2.3.1 DiscussionTwo systems of designating Munsellhue are shown in Fig.1,a letter-number system and anall-number system.The two systems are equivalent,but theletter-number system is preferred,because it requires no priorknowledge or memory of the correspondence of numbers tohues.The hue circle is graduated in steps judged visually to beapproximately equal.3.2.4 lightness,nthe attribute of color perception bywhich a non-self-luminous body is judged to reflect more orless light.3.2.5 Munsell value,nan attribute of color used in theMunsell color system to indicate the lightness of a specimen1This practice is under the jurisdiction of ASTM Committee E12 on Color andAppearance and is the direct responsibility of Subcommittee E12.07 on Color OrderSystems.Current edition approved May 1,2018.Published May 2018.Originallyapproved in 1958.Last previous edition approved in 2014 as D1535 14.DOI:10.1520/D1535-14R18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Munsell,4300 44th Street SE,Grand Rapids,MI 49512,.4The boldface numbers in parentheses refer to a list of references at the end ofthis standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 viewed