Alpines

Try some of the following:-

Ajuga reptans 'Atropurpurea' (Carpet Bugle)
Allium schoenoprasum (Chives)
Anemone blanda (Spring Flowering Anemone)
Arabis caucasica 'Snowcap' (Albida Arabis)
Artemisia schmidtiana 'Silver Mound' (Angel's Hair)
Aster alpinus (Alpine Aster)
Aurinia saxatillis 'Compacta' (Compact Basket-of-Gold)
Dianthus gratianopolitanus 'Tiny Rubies' (Cheddar Pinks)
Euphorbia myrsinites (Myrtle Euphorbia)
Evolvulus glomeratus 'Blue Haze'
Gypsophila repens 'Rosea' (Pink Creeping Baby's Breath)
Lobularia maritima 'Easter Bonnet' (Sweet Alyssum)
Phlox divaricata (Wild Sweet William)
Phlox subulata 'Red Wing' (Creeping Phlox)
Sedum spurium 'Dragon's Blood' (Stonecrop)
Tulipa saxitalis (Cliff Tulip)
Verbena canadensis 'Homestead Purple' (Creeping Vervain)
Verbena x hybrida (Garden Verbena)
Veronica x 'Goodness Grows' (Speedwell)
Veronica latifolia 'Crater Lake Blue' (Hungarian Speedwell)