Lever

Since 1.13 or earlier

Box x 5..11, y 4..12, z 10..16

Colour

Value
Dark (L* 43)
Hue
77°, chroma 17
Texture
Busy
Top
Side

Shapes of this material

No stairsUse mud brick stairs (ΔE 8.1)
No slabUse mud brick slab (ΔE 8.1)
No wallUse mud brick wall (ΔE 8.1)

Goes well with

One step lighter

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

Exposed cut copper11 lighterMud bricks4 lighterPolished granite7 lighter
One step darker

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

Cobbled deepslate9 darkerPolished blackstone21 darker
Frame

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

Spruce log26 darkerDark oak log23 darkerStripped birch log29 lighter
Accent

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

Oxidized cut copper16 lighterStripped crimson hyphae7 darkerStripped warped hyphae14 lighter

States

24 combinations
face floor, wall, ceiling
Which surface the block is attached to.
facing north, south, west, east
Same rule as buttons: with face=wall it points away from the support.
powered true, false
Redstone state. Visual only for doors, trapdoors and fence gates (no shape change); keep false.