Sat Sep 7 17:00:21 UTC 2024

Wikipedia Color Contrast Errors

Baseline: 66

Scanned 50 pages.

48 pages without color contrast violations.

2 pages with color contrast violations.

上海市 - Total Errors: 2

Selector Context Message
div.mw-content-ltr.mw-parser-output > section.mf-section-1.collapsible-block > table.wikitable > tbody > tr > th > a[title="相对湿度(页面弗存在)"].new
<a href="/w/index.php?title=%E7%9B%B8%E5%AF%B9%E6%B9%BF%E5%BA%A6&action=edit&redlink=1" class="new" title="相对湿度(页面弗存在)">相对湿度</a>
Fix any of the following: Element has insufficient color contrast of 4.02 (foreground color: #d73333, background color: #eaecf0, font size: 12.0pt (16px), font weight: bold). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-1.collapsible-block > table.wikitable > tbody > tr > th > a[title="日照時數(页面弗存在)"].new
<a href="/w/index.php?title=%E6%97%A5%E7%85%A7%E6%99%82%E6%95%B8&action=edit&redlink=1" class="new" title="日照時數(页面弗存在)">日照时数</a>
Fix any of the following: Element has insufficient color contrast of 4.02 (foreground color: #d73333, background color: #eaecf0, font size: 12.0pt (16px), font weight: bold). Expected contrast ratio of 4.5:1

汉朝 - Total Errors: 64

Selector Context Message
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="中国旧石器文化列表(页面弗存在)"].new
<a href="/w/index.php?title=%E4%B8%AD%E5%9B%BD%E6%97%A7%E7%9F%B3%E5%99%A8%E6%96%87%E5%8C%96%E5%88%97%E8%A1%A8&action=edit&redlink=1" class="new" title="中国旧石器文化列表(页面弗存在)">旧石器时代</a>
Fix any of the following: Element has insufficient color contrast of 4.44 (foreground color: #d73333, background color: #e1ffe1, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="中国中石器文化列表(页面弗存在)"].new
<a href="/w/index.php?title=%E4%B8%AD%E5%9B%BD%E4%B8%AD%E7%9F%B3%E5%99%A8%E6%96%87%E5%8C%96%E5%88%97%E8%A1%A8&action=edit&redlink=1" class="new" title="中国中石器文化列表(页面弗存在)">中石器时代</a>
Fix any of the following: Element has insufficient color contrast of 4.44 (foreground color: #d73333, background color: #e1ffe1, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="中国新石器文化列表(页面弗存在)"].new
<a href="/w/index.php?title=%E4%B8%AD%E5%9B%BD%E6%96%B0%E7%9F%B3%E5%99%A8%E6%96%87%E5%8C%96%E5%88%97%E8%A1%A8&action=edit&redlink=1" class="new" title="中国新石器文化列表(页面弗存在)">新石器时代</a>
Fix any of the following: Element has insufficient color contrast of 4.44 (foreground color: #d73333, background color: #e1ffe1, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="中国传说时代(页面弗存在)"].new > b
<b>传说时代</b>
Fix any of the following: Element has insufficient color contrast of 3.95 (foreground color: #d73333, background color: #ffe1ff, font size: 9.8pt (13px), font weight: bold). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > small > a[title="三皇五帝"]
<a href="/wiki/%E4%B8%89%E7%9A%87%E4%BA%94%E5%B8%9D" title="三皇五帝">三皇五帝</a>
Fix any of the following: Element has insufficient color contrast of 4.46 (foreground color: #3366cc, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">约前21世纪–约前16世纪</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">约前17世纪–约前11世纪</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">前11世纪<br>|<br>前256</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
.client-js.mf-expand-sections-clientpref-0.mf-font-size-clientpref-small.mw-mf-amc-clientpref-0:root
<a href="/wiki/%E8%A5%BF%E5%91%A8" title="西周">西周 <small style="color:#888">前11世纪–前771</small> </a>
Fix any of the following: Element has insufficient color contrast of 4.46 (foreground color: #3366cc, background color: #ffe1ff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">前11世纪–前771</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">前770–前256</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="春秋时期"] > small[style]
<small style="color:#888">前770–前476</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">前476–前221</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">前221–前207</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">西楚 前206–前202</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > .mw-selflink.mw-selflink.selflink > small[style]
<small style="color:#888">前202<br>|<br>220</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: bold). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">前202–8</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">8–23</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="汉更始帝(页面弗存在)"].new > small[style]
<small style="color:#888">玄汉 23–25</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">25–220</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > b
<b>三国</b>
Fix any of the following: Element has insufficient color contrast of 4.46 (foreground color: #3366cc, background color: #ffe1ff, font size: 9.8pt (13px), font weight: bold). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">220–280</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">220–265</small>
Fix any of the following: Element has insufficient color contrast of 3.04 (foreground color: #888888, background color: #c1f8f7, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">229–280</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">221–263</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">265-420</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">265–316</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">317–420</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="五胡十六国"] > b
<b>十六国</b>
Fix any of the following: Element has insufficient color contrast of 4.46 (foreground color: #3366cc, background color: #ffe1ff, font size: 9.8pt (13px), font weight: bold). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="五胡十六国"] > small[style]
<small style="color:#888">304–439</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="南北朝"] > small[style]
<small style="color:#888">420<br>|<br>589</small>
Fix any of the following: Element has insufficient color contrast of 3.04 (foreground color: #888888, background color: #c1f8f7, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">420–479</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">386–534</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">479–502</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="梁\ \(南朝\)"].mw-redirect > small[style]
<small style="color:#888">502–557</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="后梁\ \(南朝\)"].mw-redirect > small[style]
<small style="color:#888">后梁<br>555–587</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">535–557</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">534–550</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="陈\ \(南朝\)"].mw-redirect > small[style]
<small style="color:#888">557-589</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">557–581</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">550–577</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">581–619</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">618–907</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">武周 690–705</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="五代十国"] > small[style]
<small style="color:#888">907–979</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">916–1125</small>
Fix any of the following: Element has insufficient color contrast of 3.04 (foreground color: #888888, background color: #c1f8f7, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">西辽<br>1124-1218</small>
Fix any of the following: Element has insufficient color contrast of 3.04 (foreground color: #888888, background color: #c1f8f7, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="定难节度使(页面弗存在)"].new > small[style]
<small style="color:#888">定难军<br>881–982</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">960<br>|<br>1279</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">960–1127</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
.client-js.mf-expand-sections-clientpref-0.mf-font-size-clientpref-small.mw-mf-amc-clientpref-0:root
<a href="/wiki/%E5%8D%97%E5%AE%8B" title="南宋">南宋<br><small style="color:#888">1127–1279</small></a>
Fix any of the following: Element has insufficient color contrast of 4.46 (foreground color: #3366cc, background color: #ffe1ff, font size: 9.8pt (13px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">1127–1279</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">1115-1234</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="蒙古帝国"] > small[style]
<small style="color:#888">大蒙古国 1206–1271</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">1271–1368</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[href="\/wiki\/\%E5\%8C\%97\%E5\%85\%83"] > small[style]
<small style="color:#888">北元 1368–1388</small>
Fix any of the following: Element has insufficient color contrast of 3.09 (foreground color: #888888, background color: #ffece1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">1368–1644</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">南明 1644–1662</small>
Fix any of the following: Element has insufficient color contrast of 3.3 (foreground color: #888888, background color: #e1ffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[href="\/wiki\/\%E5\%90\%8E\%E9\%87\%91"] > small[style]
<small style="color:#888">后金 1616–1636</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
/* failed to decorate */ :root > small
<small style="color:#888">1636–1912</small>
Fix any of the following: Element has insufficient color contrast of 3.48 (foreground color: #888888, background color: #ffffe1, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="中华民国"] > small[style]
<small style="color:#888">1912至今</small>
Fix any of the following: Element has insufficient color contrast of 3.04 (foreground color: #888888, background color: #c1f8f7, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="中华人民共和国"] > b
<b>中华人民共和国</b>
Fix any of the following: Element has insufficient color contrast of 4.46 (foreground color: #3366cc, background color: #ffe1ff, font size: 9.8pt (13px), font weight: bold). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > a[title="中华人民共和国"] > small[style]
<small style="color:#888">1949至今</small>
Fix any of the following: Element has insufficient color contrast of 2.94 (foreground color: #888888, background color: #ffe1ff, font size: 8.1pt (10.8333px), font weight: normal). Expected contrast ratio of 4.5:1
div.mw-content-ltr.mw-parser-output > section.mf-section-0 > table.floatright[style] > tbody > tr > td[bgcolor] > div.center > b > a[title="中国历史年表(页面弗存在)"].new
<a href="/w/index.php?title=%E4%B8%AD%E5%9B%BD%E5%8E%86%E5%8F%B2%E5%B9%B4%E8%A1%A8&action=edit&redlink=1" class="new" title="中国历史年表(页面弗存在)">中国历史年表</a>
Fix any of the following: Element has insufficient color contrast of 4.11 (foreground color: #d73333, background color: #efeeee, font size: 9.8pt (13px), font weight: bold). Expected contrast ratio of 4.5:1