Donor-acceptor　(D-A)　hybrid　frameworks　with　visual　X-ray　photochromism　at　room　temperature　are　fascinating　because　of　their　promising　applications　as　X-ray　detectors.　Herein,　a　3-fold　interpenetrated　D-A　hybrid　framework,　[Eu(bcbp)1.5(DMF)(H2O)2][Co(CN)6]·4H2O·CH3OH　(1),　has　been　obtained　by　incorporating　electron-rich　Co(CN)63-　into　the　electron-deficient　europium　viologen　framework,　which　interestingly　exhibits　ultraviolet　and　low-power　X-ray　dual　photochromism　with　a　remarkable　color　change　from　brown　to　green.　Experimental　and　theoretical　studies　revealed　that　the　X-ray　photochromic　behavior　of　hybrid　1　could　be　attributed　to　its　D-A　hybrid　structural　feature　increasing　the　extent　of　photoinduced　electron　transfer　and　thus　photogenerated　radical　species　upon　X-ray　irradiation.　Meanwhile,　due　to　the　introduction　of　emissive　lanthanide　cations　in　the　D-A　system,　hybrid　1　exhibits　photomodulated　luminescence　properties.　©　2022　The　Authors.　Published　by　American　Chemical　Society.