[酷站]Checkmycolours -- 检查您网站的配色是否能让色弱或色盲的网友辨别
[酷站]Checkmycolours -- 检查您网站的配色是否能让色弱或色盲的网友辨别
Checkmycolours这个网站是用来检查您网站的配色是否能够让色弱或色盲的网友辨别。
设计，不仅仅是美感，还应该包括人性的关怀。
What is CheckMyColours?
It is a tool for checking foreground and background color combinations of all DOM elements and determining if they provide sufficient contrast when viewed by someone having color deficits.
All the tests are based on the algorithms suggested by the World Wide Web Consortium (W3C).
Read more...
Luminosity Constrast Ratio (WCAG 2.0)
(L1+.05) / (L2+.05) where L is luminosity and is defined as .2126*R + .7152*G + .0722B using linearised R, G, and B values. Linearised R (for example) = (R/FS)^2.2 where FS is full scale value (255 for 8 bit color channels). L1 is the higher value (of text or background) and L2 is the lower value.
Text or diagrams and their background must have a luminosity contrast ratio of at least 4.5:1 for level 2 conformance to guideline 1.4, and at least 7:1 for level 3 conformance to guideline 1.4.
Color brigthness (WCAG 1.0)
((Red value X 299) + (Green value X 587) + (Blue value X 114)) / 1000
The range for color brightness difference is 125.
The range for color difference is 500.
| 网站地址： checkmycolours |
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