A cathode ray tube includes a faceplate panel having a substantially flat exterior surface and a substantially concave interior surface having a phosphor screen, and a shadow mask behind the faceplate panel wherein the panel satisfies the following condition: 1.2R≦Rp≦8R where Rp is a curvature radius of the concave interior surface and R is 1.767×a diagonal width of an effective screen of the cathode ray tube. The shadow mask has an effective electron beam-passing area having a plurality of apertures, wherein the shadow mask satisfies the following condition: 0.6≦(Rs/Rp)×(PH/S/PH/C)≦1.25 where Rs is a curvature radius of the shadow mask, PH/C is a horizontal pitch of the apertures formed on a central portion of the shadow mask, and PH/S is a horizontal pitch of the apertures formed on a peripheral portion of the shadow mask.