Siemens MCM 1755 NTD - Manual (Page 28)

Color monitor MCM 1755 NTD
20 - English A26361-K472-Z100-2-5E19
Notes on ergonomic color adjustment
If you select colors for the display in your application programs, take note of the
information below.
The primary colors blue and red on a dark background do not produce the
minimum required contrast of 3:1 and are therefore not suitable for continuous text
and data entry.
When using several colors for characters and background and giving the primary
colors full modulation, you can obtain very suitable color combinations (see the
following table):
Back-
ground Character color
color black white purple blue cyan green yellow red
black + + - + + + -
white + + + - - - +
purple + + - - - - -
blue - + - + - + -
cyan + - - + - - -
green + - - + - - -
yellow + - + + - - +
red - + - - - - +
+ Color combination very suitable; light background colors are only suitable for
devices which are operated with a refresh rate of at least 75 Hz.
- Color combination not suitable because color locations are too close together,
thin characters are not identifiable or rigorous focusing is demanded of the
human eye.