diff --git a/css-scrollbars-1/Overview.bs b/css-scrollbars-1/Overview.bs index cd53334fa75..5f33c06381d 100644 --- a/css-scrollbars-1/Overview.bs +++ b/css-scrollbars-1/Overview.bs @@ -114,6 +114,12 @@ PNG of the same in a browser that supports it currently) Implementations may ignore any of the colors if the corresponding part do not exist on the underlying platform. +When using scrollbar-color property with specific color values, +authors should ensure the specified colors have enough contrast between them. +For keyword values, UAs should ensure the colors they use have enough contrast. +See +Techniques for WCAG 2.0: G183: Using a contrast ratio of 3:1 […] [[WCAG20]]. + Note: when a user interacts with a scrollbar (e.g. hovering or activating), implementations may alter which scrollbar colors apply to which scrollbar parts.