Page 77 - GIGW2

Guidelines

for Indian Government Apps & Websites

vision. Therefore the visual presentation of text and images of text MUST have a
contrast ratio of at least 4.5:1 except:
• If the text is purely for decorative purpose.
• Is not visible. or Is a part of an inactive user interface.
• Is a part of a logo where it has no minimum contrast requirement.
• That are part of a picture that contains significant other visual content.
• If the text is substantially large in size (18 pt or 14 pt bold)
it must have a contrast ratio of 3:1. (Ref. WCAG 1.4.3)

6.5.2 Use of colour should depend on the target audience. For example, a site for
children may use bigger fonts and bright colours to grab the attention of kids
while a site designed for researchers and academicians should focus on content
with subtle use of colours.

6.5.3 Websites should ensure the colours used for text and graphics look good on a
variety of platforms, monitors and devices.

6.5.4 Color is an important asset in presentation of Web content however, some users
have difficulty perceiving color e.g. People with partial sight or older users who
do not see color well. In addition there are people using text-only, limited-color
or monochrome displays and browsers.If a page has information that is conveyed
by color differences like: “required fields are red”, “error is shown in red”, and
“january sales are in red, july are in blue” or indications of an action like using
color to indicate that a link will open in a new window then these users may not
be able to access such information. Therefore it MUST be ensured that Color is
not used as the only visual means of conveying information, indicating an action,
prompting a response, or distinguishing a visual element. (Ref. WCAG 1.4.1)

6.6

Images

6.6.1 Use of images for representing text should be limited
Though images add life to a website, they also increase downloading time. Images
should only be used when it adds value to the content. Images should not be used
to present text as those using text only browsers shall not be able to access the
information thus rendering the site inaccessible to many. Therefore, text MUST
be used to convey information rather than images of text except when the image of
text can be customised to the users requirement or when a particular representation
of text is essential for the information being conveyed (such as a text in a logotype):
The use of text, rather than images of text, should be considered for page headings
and website navigation items (Menus). (Ref. WCAG 1.4.5)

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