Federal Geographic Data Committee FGDC Document Number FGDC-STD-013-2006 FGDC Digital Cartographic Standard for Geologic Map Symbolization Appendix A 39—EXPLANATION FOR CMYK COLOR CHART DISCUSSION* This diagram explains how to use the new CMYK Color Chart, which is enclosed in the sleeve on the inside back cover of this standard volume. For more specific information on the use of color (and patterns) on geologic maps, see Section 5, entitled "Guidelines for Map Color and Pattern Selection," in the accompanying introductory text. This new CMYK Color Chart was designed in Adobe Illustrator 8.0.1 (Macintosh) to closely replicate the colors on the U.S. Geological Survey's original offset-printed process-ink color chart, entitled "Printing Colors and Screens in Use by the U.S. Geological Survey for Geologic and Hydrologic Maps" [yellow/magenta/cyan version], which has long been used at the USGS for choosing colors on geologic maps. The new color chart contains the same colors that were in the original offset-printed USGS color chart; however, the old color codes indicating the YMC (yellow/magenta/cyan) values have been updated to show CMYK (cyan/magenta/yellow, with K = 0) values, to conform to industry standards. In addition, each color now has associated with it a generic look-up table number that can be used to access a particular color if it has been incorporated into a shadeset.

CMYK (K = 0) value shown Generic lookup-table number below box (see left side of shown in upper left-hand diagram for explanation of corner of box (can be used abbreviations used) to access a particular 8% CYAN WITH MAGENTA AND YELLOW color from a shadeset)

% 100 101 102 103 104 105 106 107 108 109

0

0

1

= , X ,

% A00 AA0 A10 A20 A30 A40 A50 A60 A70 AX0 0

7 110 111 112 113 114 115 116 117 118 119

=

, 7 ,

%

0 6

= A0A AAA A1A A2A A3A A4A A5A A6A A7A AXA

, 6 , 120 121 122 123 124 125 126 127 128 129

%

0

5

= , 5 ,

% A01 AA1 A11 A21 A31 A41 A51 A61 A71 AX1 0

4 130 131 132 133 134 135 136 137 138 139

=

, 4 ,

%

0 3

= A02 AA2 A12 A22 A32 A42 A52 A62 A72 AX2 , 3 ,

% 140 141 142 143 144 145 146 147 148 149

0

2

=

, 2 , %

3 A03 AA3 A13 A23 A33 A43 A53 A63 A73 AX3 1

= 150 151 152 153 154 155 156 157 158 159

, 1 ,

%

8 =

A04 AA4 A14 A24 A34 A44 A54 A64 A74 AX4 ): A ):

0 160 161 162 163 164 165 166 167 168 169

=

s (K s

e

lu a

v A05 AA5 A15 A25 A35 A45 A55 A65 A75 AX5 K

Y 170 171 172 173 174 175 176 177 178 179

M C

A06 AA6 A16 A26 A36 A46 A56 A66 A76 AX6 180 181 182 183 184 185 186 187 188 189

Abbreviations used to A07 AA7 A17 A27 A37 A47 A57 A67 A77 AX7 specify CMY values 190 191 192 193 194 195 196 197 198 199

A0X AAX A1X A2X A3X A4X A5X A6X A7X AXX

A–39–1 *For more information, see general guidelines on pages A-i to A-v.