Most of the tiles cover two white squares and two red squares, no matter
how they are translated or rotated. Only the last T-shaped block is different:
it either covers one red square and three white squares, or three red squares
and one white square. Thus, the seven tiles together cover (13 red and 15 white),
or (15 red and 13 white). However, the blue rectangle covers (14 red and 14 white).
Thus, it is impossible to arrange the seven tiles to cover the blue rectangle.