dark blue heart abstract for valentines day. murky icon abstraction in night. for graphic and

abstract backdrop benighted bleak blue card celebration dark deep design dim dingy dismal dreary dusk element energy fog glare gloaming glum halloween happy haze heart heaven holiday icon illustration isolated like love lust moody murky night opaque passion saturnine semidarkness sky swart swarthy symbol tenebrous tic twilight valentines web vector