Fillable Printable Explanation for CMYK Color Chart

Explanation for CMYK Color Chart

34—EXPLANATION FOR CMYK COLOR CHART (PLATE A)

DISCUSSION

The CMYK Color Chart (Plate A) was designed to reproduce the colors shown on the U.S. Geological Survey's offset-printed process-ink color chart,

"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 unit colors on geologic maps. Plate A nearly exactly reproduces the offset-printed USGS color chart, except that

the original color codes indicating the YMC (yellow/magenta/cyan) values have been converted to CMYK (cyan/magenta/yellow, with K = 0) to conform

to industry standards.

For general information on the use of color and patterns on geologic maps, see Section 5 entitled "Guidelines for Color Design" in the accompanying

introductory text.

8% CYAN WITH MAGENTA AND YELLOW

CMYK values (K = 0): A = 8%, 1 = 13%, 2 = 20%, 3 = 30%, 4 = 40%, 5 = 50%, 6 = 60%, 7 = 70%, X = 100%

A00

AA0 A10 A20 A30 A40 A50 A60 A70 AX0

A0A AAA A1A

A2A

A3A A4A

A5A

A6A

A7A

AXA

A01 AA1 A11

A21

A31 A41

A51

A61

A71

AX1

A02 AA2 A12

A22

A32 A42

A52

A62

A72

AX2

A03 AA3 A13

A23

A33 A43

A53

A63

A73

AX3

A04 AA4 A14 A24 A34 A44 A54 A64 A74 AX4

A05

AA5

A15

A25

A35 A45

A55

A65

A75

AX5

A06 AA6 A16 A26 A36 A46 A56 A66 A76 AX6

A07 AA7 A17

A27

A37 A47

A57

A67

A77

AX7

A0X AAX A1X A2X A3X A4X A5X A6X A7X AXX

100

110

120

130

140

150

160

170

180

190

101

111

121

131

141

151

161

171

181

191

102

112

122

132

142

152

162

172

182

192

103

113

123

133

143

153

163

173

183

193

104

114

124

134

144

154

164

174

184

194

105

115

125

135

145

155

165

175

185

195

106

116

126

136

146

156

166

176

186

196

107

117

127

137

147

157

167

177

187

197

108

118

128

138

148

158

168

178

188

198

109

119

129

139

149

159

169

179

189

199

Generic lookup-table

number shown in upper

left-hand corner of box

(can be used to access

a particular color from

a shadeset)

CMY value shown below box;

see below for explanation of

abbreviations used (shown

along far left side of boxes)

Abbreviations used to

specify CMY values