Presentation 2012-05-25
Web accessibility to the titles of websites for emergency information provided by local governments : The combination of text color and ground color used in the title
Reiko OGITA, Kazuo FURUTA,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In order that we can find out easily the title of emergency information in the websites provided by local governments, it is necessary to adopt a well-chosen combination of text color and ground color. We investigated whether color-defective persons are able to access easily titles with various combination of the two colors, referring to WCAG2.0 or JIS X 8341-3(2010). 79 websites of local governments in Japan were surveyed this time. We found out that the combination of red (255,0,0) and white (255,255,255) was employed by 53% of the local governments. Using the method for calculating the contrast ratio defined in WCAG2.0, we accumulated the contrast ratio for the two colors (red and white). This contrast ratio does not fulfill the requirement defined in WCAG2.0 or JIS X 8341-3(2010). Then we proposed how to make the contrast ratio higher. In addition, we tried a new assessment scheme of web accessibility to the websites.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Web Accessibility / color-defective / contrast ratio / emergency information / WCAG2.0 / JIS X 8341-3(2010)
Paper # WIT2012-1
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Conference Information
Committee WIT
Conference Date 2012/5/18(1days)
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Paper Information
Registration To Well-being Information Technology(WIT)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Web accessibility to the titles of websites for emergency information provided by local governments : The combination of text color and ground color used in the title
Sub Title (in English)
Keyword(1) Web Accessibility
Keyword(2) color-defective
Keyword(3) contrast ratio
Keyword(4) emergency information
Keyword(5) WCAG2.0
Keyword(6) JIS X 8341-3(2010)
1st Author's Name Reiko OGITA
1st Author's Affiliation Department of Systems Innovation School of Engineering, The University of Tokyo()
2nd Author's Name Kazuo FURUTA
2nd Author's Affiliation Department of Systems Innovation School of Engineering, The University of Tokyo
Date 2012-05-25
Paper # WIT2012-1
Volume (vol) vol.112
Number (no) 65
Page pp.pp.-
#Pages 6
Date of Issue