Warped Slab is a teal Nether wood that does not burn. As a slab it is half a block tall, for floors, roof edges, and steps. Pair it with blackstone or deepslate, or with crimson wood for contrast.
Blocks to try around it, picked by color and surface detail. These are suggestions, not rules.
Ranked by the average color of each block's texture. A close color is a starting point for a palette, not a rule.