{"action":"closed","issue":{"url":"https://api.github.com/repos/w3c/wcag/issues/200","repository_url":"https://api.github.com/repos/w3c/wcag","labels_url":"https://api.github.com/repos/w3c/wcag/issues/200/labels{/name}","comments_url":"https://api.github.com/repos/w3c/wcag/issues/200/comments","events_url":"https://api.github.com/repos/w3c/wcag/issues/200/events","html_url":"https://github.com/w3c/wcag/issues/200","id":164578592,"number":200,"title":"Rounding and Color contrast","user":{"login":"DavidMacDonald","id":2365411,"avatar_url":"https://avatars.githubusercontent.com/u/2365411?v=3","gravatar_id":"","url":"https://api.github.com/users/DavidMacDonald","html_url":"https://github.com/DavidMacDonald","followers_url":"https://api.github.com/users/DavidMacDonald/followers","following_url":"https://api.github.com/users/DavidMacDonald/following{/other_user}","gists_url":"https://api.github.com/users/DavidMacDonald/gists{/gist_id}","starred_url":"https://api.github.com/users/DavidMacDonald/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/DavidMacDonald/subscriptions","organizations_url":"https://api.github.com/users/DavidMacDonald/orgs","repos_url":"https://api.github.com/users/DavidMacDonald/repos","events_url":"https://api.github.com/users/DavidMacDonald/events{/privacy}","received_events_url":"https://api.github.com/users/DavidMacDonald/received_events","type":"User","site_admin":false},"labels":[{"id":358216308,"url":"https://api.github.com/repos/w3c/wcag/labels/CfC%20Passed","name":"CfC Passed","color":"c2e0c6","default":false},{"id":252654001,"url":"https://api.github.com/repos/w3c/wcag/labels/Surveyed%20-%20Accepted","name":"Surveyed - Accepted","color":"bfe5bf","default":false}],"state":"closed","locked":false,"assignee":{"login":"awkawk","id":4228257,"avatar_url":"https://avatars.githubusercontent.com/u/4228257?v=3","gravatar_id":"","url":"https://api.github.com/users/awkawk","html_url":"https://github.com/awkawk","followers_url":"https://api.github.com/users/awkawk/followers","following_url":"https://api.github.com/users/awkawk/following{/other_user}","gists_url":"https://api.github.com/users/awkawk/gists{/gist_id}","starred_url":"https://api.github.com/users/awkawk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/awkawk/subscriptions","organizations_url":"https://api.github.com/users/awkawk/orgs","repos_url":"https://api.github.com/users/awkawk/repos","events_url":"https://api.github.com/users/awkawk/events{/privacy}","received_events_url":"https://api.github.com/users/awkawk/received_events","type":"User","site_admin":false},"assignees":[{"login":"awkawk","id":4228257,"avatar_url":"https://avatars.githubusercontent.com/u/4228257?v=3","gravatar_id":"","url":"https://api.github.com/users/awkawk","html_url":"https://github.com/awkawk","followers_url":"https://api.github.com/users/awkawk/followers","following_url":"https://api.github.com/users/awkawk/following{/other_user}","gists_url":"https://api.github.com/users/awkawk/gists{/gist_id}","starred_url":"https://api.github.com/users/awkawk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/awkawk/subscriptions","organizations_url":"https://api.github.com/users/awkawk/orgs","repos_url":"https://api.github.com/users/awkawk/repos","events_url":"https://api.github.com/users/awkawk/events{/privacy}","received_events_url":"https://api.github.com/users/awkawk/received_events","type":"User","site_admin":false}],"milestone":null,"comments":16,"created_at":"2016-07-08T17:31:32Z","updated_at":"2016-10-28T14:16:42Z","closed_at":"2016-10-28T14:16:42Z","body":"The color value #777777 is evaluated on some analyser tools as 4.5:1 (pass), and 4.48:1 (fail) on other tools on our resource list. \r\nhttps://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html#visual-audio-contrast-contrast-resources-head\r\nTests here:\r\nhttp://davidmacd.com/test/check-color.html\r\n\r\nThe actual value appears to be 4.48. \r\nhttps://twitter.com/jared_w_smith/status/751433009316794368\r\n\r\nMy personal opinion is that the SC wording of \"at least 4.5:1\" means it cannot be rounded up to the threshold from a lower number. \r\n\r\nBut this started quite a discussion on twitter with some saying that science, math and case law points to 4.48 passing... it is argued that because we only had **one** digit in the decimal 4.5:1 for the SC then any **2** digit value can be rounded up or down according to rounding practices.( i.e., 4.44 would round to 4.4 failing and 4.45 would round to 4.5 which is a pass.)\r\n\r\nThe minimum contrast value up until the last draft of WCAG 2 was 5:1. We reluctantly accepted 4.5:1 on the last draft recommended by the Access Board ... if we had stayed at 5 then the under the argued rounding reasoning, 4.5:1 would still pass because it it rounds up to 5:1.\r\n\r\nLet's make a decision and put it in the Understanding. I suggest something explicit such as.\r\n>When this Success Criteria says \"at least 4.5:1\", it means this is the threshold, and that no number less than that can pass, even if it is rounded.\""}}
{"actor":{"display_login":"awkawk"}}