| Color Name with Dictionary Source in nbsnotes | NBS-ISCC color number |
| I |
|
| Ib |
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| ibis pink(M) | 26 | 29 | | | | | | | | |
| ibis red(M) | 47 |
| Ic |
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| iceberg(M) | 186 |
| iceberg green(P) | 149 | 185 |
| ice boat(P) | 159 |
| ice cap(P) | 172 |
| ice flow(P) | 148 |
| ice green(T) | 143 | 148 | 162 |
| iceland blue(P) | 184 |
| ice tint(T) | 148 |
| icy green(P) | 163 |
| icy morn(P) | 143 | 148 |
| Id |
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| ideal(P) | 171 |
| Il |
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| illusion(P) | 184 | 190 |
| illusive(P) | 226 |
| Im |
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| immenssee(M) | 150 |
| imperial(M) | 219 | 224 | 238 | 242 |
| imperial blue(M) | 179 |
| imperial green(M-18B9) | 136 |
| imperial green(M-26C11) | 140 |
| imperial jade(M) | 137 |
| imperial purple(H) | 218 |
| imperial purple(M) | 215+ |
| imperial purple(TC) | 219+ |
| imperial stone(M) + | 94+ |
| imperial yellow(M) | 71 |
| In |
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| inca gold(M) | 71 |
| incarnatus(B) | 3 | 5 | 26 | 27 | 28 | 29 |
| indebaudias(M) | 229 |
| inde blue(M) | 229 |
| independence(M) | 212 |
| independence(P) | 212 | 224 | 229 |
| independence(TC) | 201 | 204 |
| india ink(M) | 266 |
| indian(M) | 54 |
| indiana(M) | 254 |
| indian blue(H) | 169 |
| indian blue(M) | 229 |
| indian brown(M) | 81 | 95 | 96 |
| indian buff(M) | 76 |
| indian lake(H) | 13 |
| indian lake(M) | 258 |
| indian lake(R) | 258 | 262 |
| indian orange(H,M,TC) | 34 |
| indian pink(M) | 42 |
| indian purple(M) | 259 |
| indian purple(R) | 229 | 259 |
| indian red(M-5F11) | 43 |
| indian red(M-6L12) | 40 |
| indian red(P) | 38 |
| indian red(R) | 19 |
| indian red(T) | 19 | 43 |
| indian saffron(M) | 86 |
| indian tan(M) | 74 | 76 | 77 |
| indian turquoise(M) | 164 |
| indian yellow(H) | 67 | 70 |
| indian yellow(M) | 68 | 71 |
| india red(M) | 41 |
| india spice(M) + | 57+ |
| india tan(M) | 58 |
| indico(M) | 229 |
| indico carmine(M) | 169 |
| indigo(M) | 229 |
| indigo(S) | 179 | 204 |
| indigo(T) | 183 | 187 | 188 | 192 |
| indigo blue(R) | 183 | 186 | 187 | 204 |
| indigo carmine(M) | 169 |
| indigo extract(M) | 169 |
| indo(M) | 186 |
| indulin blue(R) | 204 |
| infanta(M) | 182 |
| infantry(M) + (infantry blue -) | 186 |
| infernal blue(M) | 201+ | 210- |
| ingenue(M) | 121 | 122 |
| ink black(M) | 192 |
| ink blue(M) | 187 |
| ink blue(P) | 183 | 187 |
| insignia blue(AN 502)(F 1510) | 201 |
| insignia blue(USA 324)(F 3505) | 187 |
| insignia red(AN 509)(F 1105) | 11 |
| insignia red(AN 619)(F 3115) | 15 |
| insignia white(AN 511)(F) | 263 |
| inspiration(P) | 148 |
| instrument black(AN 514)(F) | 267 |
| intense blue(M) | 200 | 201 |
| interior green(AN 611)(F) | 125 |
| intermediate blue(AN 608)(F) | 186 |
| international(M) | 186 |
| international orange(AN 508)(F) | 34 |
| intimate mood(P) | 261 |
| invisible green(M-31L2) | 165 |
| invisible green(M-32C12) | 152 |
| invisible green(R) | 151 | 165 |
| Io |
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| ionian blue(M) | 187 | 188 |
| ionian blue(P) | 183 | 187 |
| Ir |
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| iris(M) | 185 | 227 |
| irisglow(M) | 233 |
| iris green(M-22D8) | 137 |
| iris green(M-28A9) | 136 |
| irish green(TC) | 142 |
| irish isle(P) | 129 |
| iris leaf(P) | 127 |
| iris mauve(M) | 31 | 32 | 33 |
| iris orchid(P) | 247 | 248 |
| iron(M) | 81 | 267 |
| iron blue(M) | 266 |
| iron brown(M) | 81 | 267 |
| iron buff(M) | 76 | 90 |
| iron crocus(M) | 43 |
| iron gray(R) | 113 |
| iron grey(M) + (iron gray -) | 266 |
| iron mask(P) | 187 | 267 |
| iron minium(M) | 19 | 46 |
| iron oxide red(M) | 40 | 55 |
| iron red(M) | 40 |
| iron saffron(M) | 43 |
| iron yellow(M) | 50 | 53 |
| irresistible(P) | 255 |
| Is |
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| isabella(M) | 76 | 77 | 91 | 94 |
| isabella color(R) | 91 |
| isabellinus(B) | 77 | 91 | 94 |
| island green(P) | 143 |
| ispahan(M) | 187 |
| It |
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| italian blue(M) | 167 | 169 |
| italian blue(P) | 172 |
| italian blue(R) | 169 |
| italian lake(M) | 71 |
| italian ochre(M) | 54 | 57 |
| italian pink(M) | 83 | 84 | 86 | 87 |
| italian straw(M) | 89 | 90 |
| Iv |
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| ivory(USA 128)(F) | 86 |
| ivory(P) | 89 |
| ivory(T) | 89 | 90 |
| ivory(TC) | 92 |
| ivory brown(M) | 95 | 96 |
| ivory cream(Eng)(F) | 89 |
| ivory tint(T) | 92 | 93 |
| ivory white(M,P) | 89 |
| ivory [yellow](M) + | 89+ |
| ivory yellow(R) | 89 |
| ivy(T) | 151 | 156 |
| ivy green(H) | 128 |
| ivy [green](M) + (ivy green -) | 107 | 110 |
| ivy green(R) | 107 | 110 |
| ivy green(T) | 127 | 128 |