I have always liked the combination of blue and yellow in the garden.  It is never better than in early spring.  You can combine yellow daffodils with blue chionidoxa or hyacinths.  Arrange for your early blooming daffs to come up through a carpet of blue-purple vinca minor.  The later blooming ones can emerge from a sea of blue forget me nots.  ( The best thing about both forget me nots and daffodils is that once they are established, they require nothing at all from the gardener.)

I particularly love blue or blue-purple grape hyacinths with yellow-flowered tulips.  My favorite yellow tulip is 'Maja', which has fringed edges.  The pairing with grape hyacinths (Muscari armeniacum) or spanish bluebells (Hyacinthoides hispanica) is inspired in the garden or in a vase.

By making careful early, mid and late spring selections, you can have blues and yellows for at least six weeks.  It is worth taking the time to investigate.