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

AA0A10A20A30A40A50A60A70AX0

A0AAAAA1A

A2A

A3AA4A

A5A

A6A

A7A

AXA

A01AA1A11

A21

A31A41

A51

A61

A71

AX1

A02AA2A12

A22

A32A42

A52

A62

A72

AX2

A03AA3A13

A23

A33A43

A53

A63

A73

AX3

A04AA4A14A24A34A44A54A64A74AX4

A05

AA5

A15

A25

A35A45

A55

A65

A75

AX5

A06AA6A16A26A36A46A56A66A76AX6

A07AA7A17

A27

A37A47

A57

A67

A77

AX7

A0XAAXA1XA2XA3XA4XA5XA6XA7XAXX

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