Simulated m_F336W vs. m_F275W − m_F336W (left) and m_F336W vs. m_F336W − m_F814W CMDs (middle) of NGC 1850 that better reproduce the Δ_F336W,F814W cumulative distribution of the observed binaries. The verticalized m_F336W vs. Δ_F336W,F814W diagram is plotted on the top-right panel. The probable binaries, selected from the left-panel CMD, are colored green. Like in Fig. 3, the orange lines in the left-panel CMD mark the boundaries of the yellow area, whereas the fiducial lines of the equal-luminosity bMS and rMS binaries are indicated with continuous blue and red lines, respectively. The bottom-right panel compares the Δ_F336W,F814W cumulative distribution of the observed binaries (brown line) with the corresponding distribution for the simulated binaries. For completeness, we use the dashed blue and red lines to show the cumulative distributions derived from the simulated CMDs that host only bMS and rMS binaries, respectively.