Color blind user
Transcript of Color blind user
Web Design for Color Blind Users
IntroductionColor BlindnessWhy should we consider this issue?How can we create a assessable site for the
colorblind?Examples of websitesConclusionsQ & AREFERENCES
Color blindness is inability to
perceive differences between some
of the colors
Hereditary genetic disorder
8 to 10 % men & 0.5 % women
Primary (Red, Green, Blue) colors
By mixing together various amounts of red, green and blue light, you can make almost any color.
The most common examples of this are television screens and computer monitors.
What are the primary What are the primary colors ?colors ?
Types color blindnessMonochromacy
• Rod monochromacy (Achromatopsia)• Cone monochromacy
Dichromacy• Protanopia• Deuteronopia• Tritanopia
Trichromacy• Protanomaly• Deuteranomaly• Tritanomaly
Web site accessible
A high percentage of users
Ranked well with the search engines
professional
Targeting smartphones, and similar
technological devices
Testing1-
2- Color Scheme Designer3- Test the Image 4- Colorblind Web Page Filter
Test 1 Test 2
Good Examples
Humble Indie Bundle
Bad Examples
www.bbc.co.uk/sport/football/tables
www.google.ca/analytics
Good Color Combinations
Bad Color Combinations
Graphs and Maps
Bottom
Color Name
Color blindness is inability to distinguish among some color combinations. colorblind about 8-10% of males and 0.5% of females, so it is common enough to be an important factor in a high degree of design. The color combinations red-green color blindness is the most common, followed by color blindness, yellow and blue.
To avoid problems for users with color blindness, make sure that the distinctive color objects. Using variations in brightness to make the colored areas distinct, and test your interfaces in some website has special tool and grayscale to confirm that they are still usable.
WIKI Link : https://dal.ca.campuspack.net/Groups/CSCI_6606_-_Human_Factors_in_On-Line_Information_Systems_-_2013/Seminar_Presentations_-_CSCI_6606/Color_Blindness_and_Web_site
Berson EL. Visual function testing: clinical correlations. In: Tasman W,
Jaeger EA, eds. Duane's Foundations of Clinical Ophthalmology 15th ed.
Philadelphia, Pa: Lippincott Williams & Wilkins; 2009:chap 14.
Brettel, H., Vienot, F. & Mollon, J.D. (1997). Computerized simulation of
color appearance for dichormats. Journal of the Optical Society of
American A, 14, 10. 2647-2655.
Newman, Chuck (2000). Considering the Color-Blind. Web Techniques.
Parise, Mario (2005). Color Theory for the Color-Blind. Digital Web
Magazine.