Fujitsu A17-2 Manuel D’Utilisation

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A26361-K1063-Z121-1-7619, edition 1 
19 
Notes on ergonomic colour adjustment 
If you select colours for the display in your application programmes, take note of the information 
below. 
The primary colours 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 colours for characters and background and giving the primary colours full 
modulation, you can obtain very suitable colour combinations (see the following table): 
Characters 
Background 
black white purple blue  cyan green yellow  red 
black    + +  -  + + +  - 
white +  + + - - - + 
purple + +   - - - - - 
blue  - + -    + - + - 
cyan  + - - +   - - - 
green + - - + -    - - 
yellow + - + + - -   + 
red - 
 
 
+  Colour combination very suitable 
-  Colour combination not suitable because colour locations are too close together, thin characters 
are not identifiable or rigorous focusing is demanded of the human eye.