Left: Mass-radius relation for hybrid stars with different hadronic and quark phase parameters as is displayed in Table 2. Points on solid lines are stars with hadronic matter in the core, while points on the dashed and dash-dotted lines contain 2SC and CFL quark matter in the center, respectively. The star symbol indicates the densest stable star. The solid circle and square symbols mark the onset of the 2SC and CFL phases in the core. The cross symbol corresponds to a direct phase transition from hadronic matter to the CFL phase. The dotted line corresponds to the unstable region. The various shaded areas are 1σ and 2σ credibility regions for mass and radius inferred from the analysis of the pulsar stated in the label. Right: Corresponding dimensionless tidal deformability (Λ)–mass relation. The solid magenta line represents the 90% credibility constraint on the dimensionless tidal deformability at 1.4 M_⊙ from the GW170817 measurement (Abbott et al. 2018). The high-mass region is shown in more detail.