Apple AppleVision monitors (OS 7.1) - Manual (Page 58)

DigitalColor Meter and your AppleVision monitor work together to identify
colors on your screen based on the standard color gamuts defined by the CIE.
DigitalColor Meter can also identify colors using the Pantone system. Pantone
is a color-matching system used to specify ink colors for high-end printers.
Pantone colors are described using their printing ink formulation, which is
identified by a specific Pantone number. DigitalColor Meter performs color
matching and provides Pantone numbers for the coated (CVC), uncoated
(UVC), and process (CVP) color samples. Use the Pantone numbers when
you have your work professionally printed to ensure that the printer will use
colors similar to those displayed on your screen.
Finally, you can use DigitalColor Meter to identify the RGB (red, green, blue)
values your computer uses to create colors. The RGB number is used by some
applications to specify colors. Because the capabilities of monitors vary, RGB
values aren’t very useful for accurate color on systems other than your own.
Before you begin
You can identify any color displayed on your AppleVision monitor. For best
results, be sure the color settings (such as ambient light, white point, and
gamma) are appropriate for your office conditions and the type of material
you are working on. You change these settings using the Monitors & Sound
control panel.
You should also make sure your AppleVision monitor has been recently
recalibrated. Finally, if you have more than one monitor, make sure the color
you want to measure is being displayed on an AppleVision monitor.
DigitalColor Meter can measure RGB color on any monitor, but
measurements of CIE and Pantone colors must be done on an AppleVision
monitor.
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