> which makes no sense to me since even if the monitor colour calibration was wrong, I'd except it to apply to both the page and the image equally. Color mgmt

> which makes no sense to me since even if the monitor colour calibration was wrong, I'd except it to apply to both the page and the image equally. Color mgmt by browsers is, when it is applied, only applied to images (neither videos nor "CSS colors", broadly speaking). I'd bet you have an ICC profile associated with your monitor.