Description: In 1955, the Inter-Society Color Council (ISCC) and the US National Bureau of Standards (NBS) (now called NIST) produced the ISCC-NBS colour naming system [Kelly1976]. This system expresses common verbal colour descriptions, such as "light purplish pink," in terms of the Munsell system [Newhall1943]. Terms such as "light purplish pink" encompass a multitude of distinguishable colours. In fact, any Munsell colour whose hue is between 9P and 9RP, whose value is greater than 7.5, and whose chroma is between 5 and 9, would be considered a light purplish pink. The ISCC-NBS system formalizes such relationships. It gives colour names at three increasing levels of precision. In Level 1, a colour is designated very broadly, using one of 13 common names (pink, red, orange, brown, yellow, olive, yellow green, green, blue, purple, white, gray, or black). This description is commonly understood, but only approximate: there are many colours, for example, that would be called "red." In Level 2, 16 intermediate colour names are added (yellowish pink, reddish orange, reddish brown, orange yellow, yellowish brown, olive brown, greenish yellow, yellow green, olive green, yellowish green, bluish green, greenish blue, purplish blue, reddish purple, purplish pink, and purplish red). Combining the 16 intermediate terms with the 13 original terms from Level 1 gives a total of 29 Level 2 colour names. Level 3 extends Level 2 by adding modifiers such as light, deep, grayish, vivid, etc. In all, Level 3 contains 267 colour names, and is the most detailed level of the ISCC-NBS system. Each of the 267 colour names has been given a standard index number; Table 10.1 of [Agoston1987] lists all 267 names, along with their indices. In theory, each category in Level 2 is a subset of some category in Level 1, and each category in Level 3 is a subset of some category in Level 2. Thus a Level 3 term such as light purplish pink automatically indicates a Level 2 term (purplish pink) and a Level 1 term (pink); these three terms could describe the same colour, with finer or grosser accuracy. In practice, the relationships between levels are not so clear. Table 10.1 of [Agoston1987] categorizes the 267 Level 3 terms into the 29 Level 2 terms, but the names (especially for whites, grays, and blacks) do not always support the categorization. For example, the term reddish black (#24 of 267) is placed in the Level 2 category of red, when arguably it should be placed in the Level 2 category of black. The same confusion occurs when one tries to assign reddish black to a Level 1 category. Another example is the Level 2 category olive green: should that category be a subset of the Level 1 category of olive, or of green? Since [Kelly1976] seems unclear on such questions, judgement calls were made when needed (for example, olive green was classified as Level 1 olive rather than Level 1 green), but other researchers could justifiably make different decisions. This file lists the ISCC-NBS Level 1, 2, and 3 colour names, or designators, along with their indices. The Level 3 indices were taken from Table 10.1 of [Agoston1987], and come originally from [Kelly1976]. The indices for Level 1 and 2 do not seem to have been standardized, so they were assigned in an order in which the Level 1 and 2 names are commonly given. In addition, [Kelly1976] specifies a method of assigning abbreviations to each designator, so this files lists those abbreviations, too. Code can easily be written, in any preferred programming language, to read the data from this file, for use in computer applications. [Kelly1976] Kenneth L. Kelly & Deane B. Judd, "Color: Universal Language and Dictionary of Names," NBS Special Publication 440, 1976. Available online at http://nvlpubs.nist.gov/nistpubs/Legacy/SP/nbsspecialpublication440.pdf or https://ia801701.us.archive.org/9/items/coloruniversalla00kell/coloruniversalla00kell.pdf [Newhall1943] S. M. Newhall, D. Nickerson, & D. B. Judd, "Final Report of the O.S.A. Subcommittee on the Spacing of the Munsell Colors," Journal of the Optical Society of America, Vol. 33, Issue 7, pp. 385-418, 1943. [Agoston1987] George A. Agoston, Color Theory and Its Application in Art and Design, Springer, 1987. Author: Paul Centore (March 15, 2016) Copyright 2016 Paul Centore This file is released under the GNU General Public License (see http://www.gnu.org/licenses/ ) DESCRIPTION ENDS HERE Level1 Designator Abbreviation 1 Pink Pk 2 Red R 3 Orange O 4 Brown Br 5 Yellow Y 6 Olive Ol 7 Yellow green YG 8 Green G 9 Blue B 10 Purple P 11 White Wh 12 Gray Gy 13 Black Bk LEVEL 1 DESCRIPTION ENDS HERE Level2 Level1 Designator Abbreviation 1 1 Pink Pk 2 2 Red R 3 1 Yellowish pink yPk 4 3 Reddish orange rO 5 4 Reddish brown rBr 6 3 Orange O 7 4 Brown Br 8 5 Orange yellow OY 9 4 Yellowish brown yBr 10 5 Yellow Y 11 6 Olive brown OlBr 12 5 Greenish yellow gY 13 6 Olive Ol 14 7 Yellow green YG 15 6 Olive green OlG 16 8 Yellowish green yG 17 8 Green G 18 8 Bluish green bG 19 9 Greenish blue gB 20 9 Blue B 21 9 Purplish blue pB 22 10 Violet V 23 10 Purple P 24 10 Reddish purple rP 25 1 Purplish pink pPk 26 2 Purplish red pR 27 11 White Wh 28 12 Gray Gy 29 13 Black Bk LEVEL 2 DESCRIPTION ENDS HERE Level3 Level2 Level1 Designator Abbreviation 1 1 1 Vivid pink viv.Pk 2 1 1 Strong pink s.Pk 3 1 1 Deep pink dp.Pk 4 1 1 Light pink l.Pk 5 1 1 Moderate pink m.Pk 6 1 1 Dark pink d.Pk 7 1 1 Pale pink p.Pk 8 1 1 Grayish pink gy.Pk 9 1 1 Pinkish white pkWh 10 1 1 Pinkish gray pkGy 11 2 2 Vivid red viv.R 12 2 2 Strong red s.R 13 2 2 Deep red dp.R 14 2 2 Very deep red v.dp.R 15 2 2 Moderate red m.R 16 2 2 Dark red d.R 17 2 2 Very dark red v.d.R 18 2 2 Light grayish red l.gy.R 19 2 2 Grayish red gy.R 20 2 2 Dark grayish red d.gy.R 21 2 2 Blackish red bkR 22 2 2 Reddish gray rGy 23 2 2 Dark reddish gray d.rGy 24 2 2 Reddish black rBk 25 3 1 Vivid yellowish pink viv.yPk 26 3 1 Strong yellowish pink s.yPk 27 3 1 Deep yellowish pink dp.yPk 28 3 1 Light yellowish pink l.yPk 29 3 1 Moderate yellowish pink m.yPk 30 3 1 Dark yellowish pink d.yPk 31 3 1 Pale yellowish pink p.yPk 32 3 1 Grayish yellowish pink gy.yPk 33 3 1 Brownish pink brPk 34 4 3 Vivid reddish orange viv.rO 35 4 3 Strong reddish orange s.rO 36 4 3 Deep reddish orange dp.rO 37 4 3 Moderate reddish orange m.rO 38 4 3 Dark reddish orange d.rO 39 4 3 Grayish reddish orange gy.rO 40 5 4 Strong reddish brown s.rBr 41 5 4 Deep reddish brown dp.rBr 42 5 4 Light reddish brown l.rBr 43 5 4 Moderate reddish brown m.rBr 44 5 4 Dark reddish brown d.rBr 45 5 4 Light grayish reddish brown l.gy.rBr 46 5 4 Grayish reddish brown gy.rBr 47 5 4 Dark grayish reddish brown d.gy.rBr 48 6 3 Vivid orange viv.O 49 6 3 Brilliant orange brill.O 50 6 3 Strong orange s.O 51 6 3 Deep orange dp.O 52 6 3 Light orange l.O 53 6 3 Moderate orange m.O 54 6 3 Brownish orange brO 55 7 4 Strong brown s.Br 56 7 4 Deep brown dp.Br 57 7 4 Light brown l.Br 58 7 4 Moderate brown m.Br 59 7 4 Dark brown d.Br 60 7 4 Light grayish brown l.gy.Br 61 7 4 Grayish brown gy.Br 62 7 4 Dark grayish brown d.gy.Br 63 7 4 Light brownish gray l.brGy 64 7 4 Brownish gray brGy 65 7 4 Brownish black brBk 66 8 5 Vivid orange yellow viv.OY 67 8 5 Brilliant orange yellow brill.OY 68 8 5 Strong orange yellow s.OY 69 8 5 Deep orange yellow dp.OY 70 8 5 Light orange yellow l.OY 71 8 5 Moderate orange yellow m.OY 72 8 5 Dark orange yellow d.OY 73 8 5 Pale orange yellow p.OY 74 9 4 Strong yellowish brown s.yBr 75 9 4 Deep yellowish brown dp.yBr 76 9 4 Light yellowish brown l.yBr 77 9 4 Moderate yellowish brown m.yBr 78 9 4 Dark yellowish brown d.yBr 79 9 4 Light grayish yellowish brown l.gy.yBr 80 9 4 Grayish yellowish brown gy.yBr 81 9 4 Dark grayish yellowish brown d.gy.yBr 82 10 5 Vivid yellow viv.Y 83 10 5 Brilliant yellow brill.Y 84 10 5 Strong yellow s.Y 85 10 5 Deep yellow dp.Y 86 10 5 Light yellow l.Y 87 10 5 Moderate yellow m.Y 88 10 5 Dark yellow d.Y 89 10 5 Pale yellow p.Y 90 10 5 Grayish yellow gy.Y 91 10 5 Dark grayish yellow d.gy.Y 92 10 5 Yellowish white yWh 93 10 5 Yellowish gray yGy 94 11 6 Light olive brown l.OlBr 95 11 6 Moderate olive brown m.OlBr 96 11 6 Dark olive brown d.OlBr 97 12 5 Vivid greenish yellow viv.gY 98 12 5 Brilliant greenish yellow brill.gY 99 12 5 Strong greenish yellow s.gY 100 12 5 Deep greenish yellow dp.gY 101 12 5 Light greenish yellow l.gY 102 12 5 Moderate greenish yellow m.gY 103 12 5 Dark greenish yellow d.gY 104 12 5 Pale greenish yellow p.gY 105 12 5 Grayish greenish yellow gy.gY 106 13 6 Light olive l.Ol 107 13 6 Moderate olive m.Ol 108 13 6 Dark olive d.Ol 109 13 6 Light grayish olive l.gy.Ol 110 13 6 Grayish olive gy.Ol 111 13 6 Dark grayish olive d.gy.Ol 112 13 6 Light olive gray l.OlGy 113 13 6 Olive gray OlGy 114 13 6 Olive black OlBk 115 14 7 Vivid yellow green viv.YG 116 14 7 Brilliant yellow green brill.YG 117 14 7 Strong yellow green s.YG 118 14 7 Deep yellow green d.YG 119 14 7 Light yellow green l.YG 120 14 7 Moderate yellow green m.YG 121 14 7 Pale yellow green p.YG 122 14 7 Grayish yellow green gy.YG 123 15 6 Strong olive green s.OlG 124 15 6 Deep olive green dp.OlG 125 15 6 Moderate olive green m.OlG 126 15 6 Dark olive green d.OlG 127 15 6 Grayish olive green gy.OlG 128 15 6 Dark grayish olive green d.gy.OlG 129 16 8 Vivid yellowish green viv.yG 130 16 8 Brilliant yellowish green brill.yG 131 16 8 Strong yellowish green s.yG 132 16 8 Deep yellowish green dp.yG 133 16 8 Very deep yellowish green v.dp.yG 134 16 8 Very light yellowish green v.l.yG 135 16 8 Light yellowish green l.yG 136 16 8 Moderate yellowish green m.yG 137 16 8 Dark yellowish green d.yG 138 16 8 Very dark yellowish green v.d.yG 139 17 8 Vivid green viv.G 140 17 8 Brilliant green brill.G 141 17 8 Strong green s.G 142 17 8 Deep green dp.G 143 17 8 Very light green v.l.G 144 17 8 Light green l.G 145 17 8 Moderate green m.G 146 17 8 Dark green d.G 147 17 8 Very dark green v.d.G 148 17 8 Very pale green v.p.G 149 17 8 Pale green p.G 150 17 8 Grayish green gy.G 151 17 8 Dark grayish green d.gy.G 152 17 8 Blackish green bk.G 153 17 8 Greenish white gWh 154 17 8 Light greenish gray l.gGy 155 17 8 Greenish gray gGy 156 17 8 Dark greenish gray d.gGy 157 17 8 Greenish black gBk 158 18 8 Vivid bluish green viv.bG 159 18 8 Brilliant bluish green brill.bG 160 18 8 Strong bluish green s.bG 161 18 8 Deep bluish green dp.bG 162 18 8 Very light bluish green v.l.bG 163 18 8 Light bluish green l.bG 164 18 8 Moderate bluish green m.bG 165 18 8 Dark bluish green d.bG 166 18 8 Very dark bluish green v.d.bG 167 19 9 Vivid greenish blue viv.gB 168 19 9 Brilliant greenish blue brill.gB 169 19 9 Strong greenish blue s.gB 170 19 9 Deep greenish blue dp.gB 171 19 9 Very light greenish blue v.l.gB 172 19 9 Light greenish blue l.gB 173 19 9 Moderate greenish blue m.gB 174 19 9 Dark greenish blue d.gB 175 19 9 Very dark greenish blue v.d.gB 176 20 9 Vivid blue viv.B 177 20 9 Brilliant blue brill.B 178 20 9 Strong blue s.B 179 20 9 Deep blue dp.B 180 20 9 Very light blue v.l.B 181 20 9 Light blue l.B 182 20 9 Moderate blue m.B 183 20 9 Dark blue d.B 184 20 9 Very pale blue v.p.B 185 20 9 Pale blue p.B 186 20 9 Grayish blue gy.B 187 20 9 Dark grayish blue d.gy.B 188 20 9 Blackish blue bkB 189 20 9 Bluish white bWh 190 20 9 Light bluish gray l.bGy 191 20 9 Bluish gray bGy 192 20 9 Dark bluish gray d.bGy 193 20 9 Bluish black bBk 194 21 9 Vivid purplish blue viv.pB 195 21 9 Brilliant purplish blue brill.pB 196 21 9 Strong purplish blue s.pB 197 21 9 Deep purplish blue dp.pB 198 21 9 Very light purplish blue v.l.pB 199 21 9 Light purplish blue l.pB 200 21 9 Moderate purplish blue m.pB 201 21 9 Dark purplish blue d.pB 202 21 9 Very pale purplish blue v.p.pB 203 21 9 Pale purplish blue p.pB 204 21 9 Grayish purplish blue gy.pB 205 22 10 Vivid violet viv.V 206 22 10 Brilliant violet brill.V 207 22 10 Strong violet s.V 208 22 10 Deep violet dp.V 209 22 10 Very light violet v.l.V 210 22 10 Light violet l.V 211 22 10 Moderate violet m.V 212 22 10 Dark violet d.V 213 22 10 Very pale violet v.p.V 214 22 10 Pale violet p.V 215 22 10 Grayish violet gy.V 216 23 10 Vivid purple viv.P 217 23 10 Brilliant purple brill.P 218 23 10 Strong purple s.P 219 23 10 Deep purple dp.P 220 23 10 Very deep purple v.dp.P 221 23 10 Very light purple v.l.P 222 23 10 Light purple l.P 223 23 10 Moderate purple m.P 224 23 10 Dark purple d.P 225 23 10 Very dark purple v.d.P 226 23 10 Very pale purple v.p.P 227 23 10 Pale purple p.P 228 23 10 Grayish purple gy.P 229 23 10 Dark grayish purple d.gy.P 230 23 10 Blackish purple bk.P 231 23 10 Purplish white pWh 232 23 10 Light purplish gray l.pGy 233 23 10 Purplish gray pGy 234 23 10 Dark purplish gray d.pGy 235 23 10 Purplish black pBk 236 24 10 Vivid reddish purple viv.rP 237 24 10 Strong reddish purple s.rP 238 24 10 Deep reddish purple dp.rP 239 24 10 Very deep reddish purple v.d.rP 240 24 10 Light reddish purple l.rP 241 24 10 Moderate reddish purple m.rP 242 24 10 Dark reddish purple d.rP 243 24 10 Very dark reddish purple v.d.rP 244 24 10 Pale reddish purple p.rP 245 24 10 Grayish reddish purple gy.rP 246 25 1 Brilliant purplish pink brill.pPk 247 25 1 Strong purplish pink s.pPk 248 25 1 Deep purplish pink dp.pPk 249 25 1 Light purplish pink l.pPk 250 25 1 Moderate purplish pink m.pPk 251 25 1 Dark purplish pink d.pPk 252 25 1 Pale purplish pink p.pPk 253 25 1 Grayish purplish pink gy.pPk 254 26 2 Vivid purplish red viv.pR 255 26 2 Strong purplish red s.pR 256 26 2 Deep purplish red dp.pR 257 26 2 Very deep purplish red v.dp.pR 258 26 2 Moderate purplish red m.pR 259 26 2 Dark purplish red d.pR 260 26 2 Very dark purplish red v.d.pR 261 26 2 Light grayish purplish red l.gy.pR 262 26 2 Grayish purplish red gy.pR 263 27 11 White Wh 264 28 12 Light gray l.Gy 265 28 12 Medium gray m.Gy 266 28 12 Dark gray d.Gy 267 29 13 Black Bk LEVEL 3 DESCRIPTION ENDS HERE