- Hue
- Black carries almost no hue, so this colour is free to be whatever it likes — there is nothing for it to clash with.
- Lightness
- moderately lighter than Black — a gap of about 21 lightness steps, which is enough to read as separate up close, though it will compress under a flash.
- Saturation
- Chroma 44 over a modest area. Concentrated saturation in something small is the most efficient colour in an outfit: maximum effect, minimum risk.
- Temperature
- Temperature-neutral, so it will not argue with Black whichever way Black leans.
- Formality
- High chroma reads as less formal, essentially everywhere. At this level of dress it works on something small and works against you on something large.
- Fabric
- Whatever fabric this ends up in will shift the colour: a pile or a nap reads deeper, a satin or a silk reads lighter along the highlight. Match sheen before you match shade.
- Season
- Season and climate change what this colour looks like more than most people expect — direct summer sun saturates, flat winter light does the opposite.
- Where you will be
- Expect mixed indoor and outdoor overcast at a funeral or memorial.
- In photographs
- Very deep colours lose all shape detail against a dark background — the outline survives, the garment does not.
- How it goes wrong
- Matching it exactly to the shoes. It reads as a set bought together rather than an outfit assembled deliberately. The strategy-level risk is echoing too closely, which turns a relationship into a failed match.