 | ਇਹ ਫਰਮਾ ਹੇਠ ਲਿਖੇ ਲੂਆ ਨੂੰ ਵਰਤਦਾ ਹੈ:
|
This template returns the color contrast ratio between the two colors provided. It accepts two parameters, which can be a standard RGB hex color code (#RRGGBB) or a standard HTML color or CSS "orange" (= #FFA500). Color names and hex letters are case-insensitive (i.e. they may be upper- or lower-case).
Usage
Examples with light background
Examples with dark background
WCAG 2.0
As a guide to selecting foreground and background colors for text, the Web Content Accessibility Guidelines 2.0 (guideline 1.4) classifies contrast ratios for ordinary text as follows:
WCAG 2.0 text contrast ratios
| Font size
|
Not Compliant
|
Level AA
|
Level AAA
|
| Normal
|
< 4.5
|
4.5 to 7.0
|
> 7.0
|
| Large (18 pt or 14 pt bold)
|
< 3.0
|
3.0 to 4.5
|
> 4.5
|
Normal wiki-text is rendered by common browsers at roughly 9.5 to 10.5 pt (12.5 to 14 px), depending on skin. Text would need to be about 180% or 140% bold to qualify as "Large" for WCAG purposes.
See also
