Difference between revisions of "Projects/Usability/HIG/Color"

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(Created page with "==Purpose== ==Guidelines== * Choose colors by selecting the appropriate theme color or system color. * Never use color as a primary method of communication, but as a secondary...")
 
(Implementation: simplify)
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==Purpose==
 
==Purpose==
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Color is a basal quality in human perception. Color can be used for communication, it is a very efficient way to direct attention, and significance can assigned to an object with color. However, color is a historical and cultural phenomenon, and is subject of continuous aesthetical changes. Furthermore, it should be taken into consideration that a rather high percentage of population has a perception disorder ranging from difficulties to discriminate between red and green to complete color blindness.
 +
 
==Guidelines==
 
==Guidelines==
* Choose colors by selecting the appropriate theme color or system color.
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* Choose colors by selecting the appropriate theme color or system color. You can use the [http://kde-look.org/content/show.php/CheckColorRoles?content=90034 CheckColorRoles] theme to detect bugs regarding the use of system colors in your application.
 
* Never use color as a primary method of communication, but as a secondary method to reinforce meaning visually.
 
* Never use color as a primary method of communication, but as a secondary method to reinforce meaning visually.
 
* Make foreground color contrasting to background.
 
* Make foreground color contrasting to background.
 
* Consider accessibility for users with color vision deficiency (~5% population).
 
* Consider accessibility for users with color vision deficiency (~5% population).
 
==Implementation==
 
==Implementation==
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[http://api.kde.org/4.10-api/kdelibs-apidocs/kdeui/html/classKColorScheme.html KColorScheme] provides methods to pick readable colors based on the type of message to convey.

Revision as of 13:51, 2 August 2013

Purpose

Color is a basal quality in human perception. Color can be used for communication, it is a very efficient way to direct attention, and significance can assigned to an object with color. However, color is a historical and cultural phenomenon, and is subject of continuous aesthetical changes. Furthermore, it should be taken into consideration that a rather high percentage of population has a perception disorder ranging from difficulties to discriminate between red and green to complete color blindness.

Guidelines

  • Choose colors by selecting the appropriate theme color or system color. You can use the CheckColorRoles theme to detect bugs regarding the use of system colors in your application.
  • Never use color as a primary method of communication, but as a secondary method to reinforce meaning visually.
  • Make foreground color contrasting to background.
  • Consider accessibility for users with color vision deficiency (~5% population).

Implementation

KColorScheme provides methods to pick readable colors based on the type of message to convey.


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