Xerox DocuColor 8000 Supplementary Manual - page 69

S

POT

-O

N

69

• RGB (Device Code 0-255)

– Small: A substitute color replaces any color that falls within the nearest +/- 0.25 of the 

color value entered.

– Large: A substitute color replaces any color that falls within the nearest +/- 1 of the 

color value entered. 

• RGB (0-100%)

– Small: A substitute color replaces any color that falls within the nearest +/-0.25% of the 

color value after scaling. 

– Large: A substitute color replaces any color that falls within the nearest +/-0.5% of the 

color value after scaling.

Color substitution

A color substitution takes place when a substitute color is defined with a different set of 

CMYK values for the same value-name as the original color.

The following color examples show how a substitution works.

•

Original color:

 <100, 0, 0, 0> for the CMYK values (cyan)

•

Substitute 1:

 <0, 100, 100, 0> (red)

•

Substitute 2:

 <100, 0, 100, 0> (green)

N

OTE

: 

In the examples, the extreme values and terms “red” and “green” are used for illustrative 

purposes only. In practice, color substitution is not used for extreme color shifts.

The following table shows color substitution with different sets of CMYK values assigned to 

the same original color.

Priority scheme

If two substitute colors are defined with the same value-names, but with different sets of 

CMYK values and different tolerance ranges, Spot-On resolves the priority of substitution 

according to the order of color in the group.

Spot-On process color substitution is based on the order of color in the group. The color 

entries at the top of the list have priority over the colors at the bottom of the list. Spot-On 

scans the list from top to bottom and processes substitution in linear order. When a color is 

remapped, it is not overridden by any subsequent substitution call.

Substitution 

value-name

CMYK 

values

Before 

substitution

After 

substitution 

Original color

—

<100, 0, 0, 0>

—

—

Substitute 1

<100.0c, 0.0m, 0.0y, 0.0k>

<0, 100, 100, 0>

cyan

red

Substitute 2

<100.0c, 0.0m, 0.0y, 0.0k>

<100, 0, 100, 0>

cyan

green