A cathode ray tube including a tube realized through a face panel, a funnel, and a neck; a color selection apparatus including a shadow mask having a an effective area with apertures and a mask frame supporting the shadow mask; an electron gun mounted in the neck and emitting electron beams; a deflection apparatus generating a magnetic field to deflect the electron beams; and a moire compensation circuit performing moire compensation, wherein the color selection apparatus satisfies the following condition, 0.76 ≥ Ke Ko ≥ 0.85 where Ko and Ke are K values respectively at a center point and a horizontal end of the effective area, and wherein K satisfies the following condition, K = DL Pv × Bs Ps where DL and Pv are respectively a vertical length and a vertical pitch of the apertures, and Bs and Ps are respectively a vertical diameter and a vertical pitch of the electron beams landing on the effective area.