Muscari, Grape Hyacinth.

Grape hyacinths (Muscari) are small, spring bulbs with bright blue flowers that look like a cross between a bunch of grapes and miniature hyacinths. They look good at the front of a border, naturalised in grass or in shady places such as at the edge of a woodland or under deciduous shrubs. They spread easily and you might find them invasive, so if you'd rather keep them contained plant them in containers.
Grape hyacinths attract a wide range of pollinators, including bees, providing them with an early source of pollen and nectar after hibernation.
How to grow grape hyacinths
Plant grape hyacinth bulbs in moist but well-drained soil or compost in autumn, and water well. Cut back after flowering to prevent seeds developing.