Difference between revisions of "Inadequate Color Contrast"

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How to utilize adequate color contrast within your web-based content.
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Without sufficient color contrast between font and background, people who are color blind or have low vision may not benefit from the information. And using color alone to convey meaning will leave those who are color blind or blind unable to interpret the meaning.  
 
Without sufficient color contrast between font and background, people who are color blind or have low vision may not benefit from the information. And using color alone to convey meaning will leave those who are color blind or blind unable to interpret the meaning.  
  
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===To change the color of your text you need to...===
 
  
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===Examples of Inadequate Text Color Contrast===
  
#Highlight the text you want to change to another color.
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<span style="color:yellow;">Example of inadequate color contrast </span>
#Click on the Text Color icon (letter A at left in the toolbar).
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#Click on a color in the drop-down menu to apply it to the text.
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(Yellow is an example of a color that usually doesn't contrast well against a white background.)
  
====Examples:====
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'''versus'''
  
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<span style="color:green;">Adequate color contrast</span>
  
  
Example of inadequate color contrast* (*inadequate color contrast)
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====Using color can enhance the meaning of an important passage, however, it is important to be careful to choose colors for the text that contrasts well with the background color of the page. ====
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'''A light color such as pink can be a problematic text color:'''
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<span style="color:pink;"> Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. </span>
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'''versus'''
 
'''versus'''
  
adequate color contrast
 
  
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'''However, a dark color such as purple usually contrasts well against a white background:'''
  
====Tools:====
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<span style="color:purple;">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</span>
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===Typically Wordpress and Canvas will automatically format your page with adequate color contrast===
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However, if you wish to change the color of your text on your site here are some directions.
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====To change the color of your text within Canvas:====
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#Highlight the text you want to change to another color.
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#Click on the '''Text color''' icon (letter "A" at left in the toolbar).
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#Click on a color in the drop-down menu to apply it to the text.<br>
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 +
 
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====To change the color of your text within Wordpress:====
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#Highlight the text you want to change to another color.
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#Select the icon for '''Toggle Toolbar'''
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#Click on the '''Text color''' icon (letter "A" at left in the toolbar).
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#Click on a color in the drop-down menu to apply it to the text.
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====Tools To Check Color Contrast Within Your Text:====
 
[https://webaim.org/resources/contrastchecker/ WebAim Color Contrast Checker]  
 
[https://webaim.org/resources/contrastchecker/ WebAim Color Contrast Checker]  
 
The WebAim Color Contrast Checker is a free site that can check the legibility of text and image by comparing the color of the text against the color of the background.
 
The WebAim Color Contrast Checker is a free site that can check the legibility of text and image by comparing the color of the text against the color of the background.
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The Colour Contrast Analyser (CCA) helps you determine the legibility of text and the contrast of visual elements, such as graphical controls and visual indicators.
 
The Colour Contrast Analyser (CCA) helps you determine the legibility of text and the contrast of visual elements, such as graphical controls and visual indicators.
  
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===Inadequate Color Contrast with Text Overlaying Images===
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Sometimes when including images with text, the color of the text contrasted against the images can make the text illegible. Here are some examples of images with adequate color contrast and inadequate color contrast.
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[[File:800px-Breaded Cat.edited.jpg|left|400px|thumbnail|A dark color against a dark image is a example of Inadequate color contrast]]
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[[File:Luggage-1643010 960 720edited.jpg|400px|thumbnail|left|However a light text color like white against a dark image is an example of adequate color contrast]]
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====Accessibility Reasorces====
 
====Accessibility Reasorces====
*[https://www.evergreen.edu/accessibility Evergreen's Guide on Accessible Technology ]
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*[https://www.evergreen.edu/accessibility Evergreen's Guide on Accessible Technology]
*[[Accessibility_Help|Accessibility Help Page ]]
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*[[Accessibility_Help|Accessibility Help Page]]
 
*[[Tips_for_Providing_Barrier-Free_Access|Tips for Providing Barrier-Free Access]]
 
*[[Tips_for_Providing_Barrier-Free_Access|Tips for Providing Barrier-Free Access]]
 
*[[Accessibility_Software|Accessibility Software]]
 
*[[Accessibility_Software|Accessibility Software]]
 
*[[Accessibility:_Where_to_Go_for_Help|Accessibility: Where to Go for Help]]
 
*[[Accessibility:_Where_to_Go_for_Help|Accessibility: Where to Go for Help]]
 
*[[Optical_Character_Recognition|Optical Character Recognition]]
 
*[[Optical_Character_Recognition|Optical Character Recognition]]
====Creating Accessible Content====
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====Canvas Accessiblility Checklist====
*[[Accessible_Word_Documents|Accessible Word Documents]]
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*[[Accessibility_Checklist|Accessibility Checklist]]
*[[Create_an_Accessible_PDF|Create an Accessible PDF]]
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*[[Utilizing_Headings|Utilizing Headings]]
*[[Creating_Accessible_Math_Resources|Creating Accessible Math Resources]]
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*[[Inadequate_Color_Contrast|Inadequate Color Contrast]]
*[[Accessible_Spreadsheets|Accessible Spreadsheets]]
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*[[Utilizing_Descriptive_Text|Utilizing Descriptive Text]]
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*[[Proper_List_Format| Proper List Format]]
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*[[Alt_Text_and_Captioning|Alt Text and Captioning]]
 
*[[Accessible_Video|Accessible Video]]
 
*[[Accessible_Video|Accessible Video]]
*[[Accessible_Canvas_Pages|Accessible Canvas Pages]]
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*[[Create_an_Accessible_PDF|Create an Accessible PDF]]
*[[Accessible_WordPress_Pages|Accessible WordPress Pages ]]
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*[[Accessibility_Within_Canvas_Checklist|Accessibility Within Canvas Checklist]]
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*[[Learn_more_about_Accessibiliity_and_Inclusive_Design|Learn more about Accessibiliity and Inclusive Design]]
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[[Category:Accessibility]]

Latest revision as of 15:44, 7 December 2017

How to utilize adequate color contrast within your web-based content.

Without sufficient color contrast between font and background, people who are color blind or have low vision may not benefit from the information. And using color alone to convey meaning will leave those who are color blind or blind unable to interpret the meaning.


Examples of Inadequate Text Color Contrast

Example of inadequate color contrast

(Yellow is an example of a color that usually doesn't contrast well against a white background.)

versus

Adequate color contrast


Using color can enhance the meaning of an important passage, however, it is important to be careful to choose colors for the text that contrasts well with the background color of the page.

A light color such as pink can be a problematic text color:

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.


versus


However, a dark color such as purple usually contrasts well against a white background:

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.


Typically Wordpress and Canvas will automatically format your page with adequate color contrast

However, if you wish to change the color of your text on your site here are some directions.


To change the color of your text within Canvas:

  1. Highlight the text you want to change to another color.
  2. Click on the Text color icon (letter "A" at left in the toolbar).
  3. Click on a color in the drop-down menu to apply it to the text.


To change the color of your text within Wordpress:

  1. Highlight the text you want to change to another color.
  2. Select the icon for Toggle Toolbar
  3. Click on the Text color icon (letter "A" at left in the toolbar).
  4. Click on a color in the drop-down menu to apply it to the text.


Tools To Check Color Contrast Within Your Text:

WebAim Color Contrast Checker The WebAim Color Contrast Checker is a free site that can check the legibility of text and image by comparing the color of the text against the color of the background.

Colour Contrast Analyser The Colour Contrast Analyser (CCA) helps you determine the legibility of text and the contrast of visual elements, such as graphical controls and visual indicators.


Inadequate Color Contrast with Text Overlaying Images

Sometimes when including images with text, the color of the text contrasted against the images can make the text illegible. Here are some examples of images with adequate color contrast and inadequate color contrast.

A dark color against a dark image is a example of Inadequate color contrast


However a light text color like white against a dark image is an example of adequate color contrast