| Blaue Blume | blue flower |
| Blaublüter | blue blood |
| Blaue Banane | Blue Banana |
| blaue Karte | blue card |
| blaues Auge | black eye |
| blaue Stunde | blue hour |
| Butterblume | buttercup |
| Flammenblume | phlox |
| Blauer Riese | blue giant |
| Blaumerle | blue rock thrush |
| blauer Brief | pink slip |
| blauer Fleck | bruise |
| Blaualge | cyanobacteria cyanophyta |
| Blaubeere | blueberry bilberry |
| Blaubirke | blue birch |
| Blauelster | azure-winged magpie |
| Blauhelm | blue beret |
| Blaupause | blueprint |
| Blausäure | hydrogen cyanide prussic acid hydrocyanic acid |
| blaublütig | blue-blooded |