Observed Gaia DR3 CMD of NGC 2516. Left panel: fits for isochrones with varying rotation rates. Isochrones with v/v_crit ≤ 0.4 effectively reproduce the observed data. Right panel: solid black isochrone represents the best-fitting result with v/v_crit = 0.3. The grey background tracks collectively represent the uncertainty, which is determined using a set of 500 isochrones randomly selected from the Monte Carlo approach explained in the main text. The dotted line marks the boundary of the binary sequence.