Observer

Since 1.13 or earlier

Colour

Value
Dark (L* 33)
Hue
Neutral
Texture
Busy
Top
Side
Side
Side

Shapes of this material

Block
No stairsUse polished deepslate stairs (ΔE 1.0)
No slabUse polished deepslate slab (ΔE 1.0)
No wallUse polished deepslate wall (ΔE 1.0)

Goes well with

One step lighter

The next band up in a gradient: same hue, no hard line.

Polished tuff11 lighterCracked stone bricks17 lighter
One step darker

The next band down: shade under ledges and at the base.

Cracked deepslate tiles10 darkerPolished blackstone11 darkerNether bricks22 darker
Frame

A log or polished stone that contrasts in value, one block in front of the fill.

Polished andesite24 lighterSmooth stone33 lighterPurpur pillar27 lighter
Accent

A colour for about a tenth of the build, at the focal point.

Mangrove planks1 darkerJungle log2 darkerCinnabar11 lighter

Closest colours

Gray stained glassΔE 0.9Polished deepslateΔE 1.0Deepslate bricksΔE 1.3Deepslate coal oreΔE 1.8Cobbled deepslateΔE 2.3BasaltΔE 2.9DeepslateΔE 3.0Smooth basaltΔE 3.2

States

12 combinations
facing north, east, south, west, up, down
Direction the block points to. See the type-specific meaning; for most attached blocks it points away from the supporting block.
powered true, false
Redstone state. Visual only for doors, trapdoors and fence gates (no shape change); keep false.