Color conversion apparatus, color-conversion-table generating apparatus, and non-transitory computer readable medium

A color-conversion-table generating apparatus comprising:

• a processor configured to:
• generate a color conversion table, the color conversion table being used to convert a signal value in a first color space to a signal value in a second color space, the signal value in the first color space representing an image, the signal value in the second color space including YMCK signals and a spot color signal, the YMCK signals corresponding to amounts, to be used, of color materials of YMCK colors, the spot color signal corresponding to an amount, to be used, of color material of spot color, the spot color being other than the YMCK colors, the color conversion table being a table in which a spot-color conversion ratio is determined in accordance with a property of an image that is to be printed by using the signal value in the second color space, the spot-color conversion ratio being a ratio for converting the signal value in the first color space to the spot color signal.

A non-transitory computer readable medium storing a program causing a computer to execute a process comprising:

• in conversion of a signal value in a first color space to a signal value in a second color space, the signal value in the first color space representing an image, the signal value in the second color space including YMCK signals and a spot color signal, the YMCK signals corresponding to amounts, to be used, of color materials of YMCK colors, the spot color signal corresponding to an amount, to be used, of color material of a spot color, the spot color being other than YMCK colors, setting a spot-color conversion ratio in accordance with a property of an image that is to be printed by using the signal value in the second color space, the spot-color conversion ratio being a ratio for converting the signal value in the first color space to the spot color signal.