Swift X-ray hardness ratio (H − S)/(H + S) for NGC 3227 in 2008 (top) and 2019 (bottom). The horizontal solid line in purple is the historical average hardness ratio before late 2020. The horizontal dashed line in purple, corresponding to (H − S)/(H + S)=0.4, is shown merely to guide the eye. Calendar dates are marked by the vertical dashed lines. The vertical dotted lines in blue mark the joint HST/COS, XMM-Newton, and NuSTAR observations in late 2019.