Mustard on warm, rich skin tones (True Autumn)

The answer

Yes. Mustard sits inside the True Autumn palette. The nearest thing in the palette is #C4903C, ΔE 7.6 away. Under 12 reads as the same colour family; past 25 the two are visibly different colours.

It does not collide with anything on the season's avoid list, so the only question is distance.

How mustard scores across all twelve seasons

Mustard is an opinionated colour: True Autumn scores it 81 and True Winter scores it 0. A gap that wide means the colour genuinely decides something, and getting it right is worth the effort.

True Autumn is the top of that list. No season wears mustard better, which is worth knowing before you talk yourself out of it.

• True Autumn: 81 (ΔE 7.6) <- this season.
• True Spring: 79 (ΔE 8.4).
• Bright Spring: 75 (ΔE 10.0).
• True Winter: 0 (ΔE 34.1).

What to wear it with

The palette entries closest to mustard are the ones that will read as a deliberate pairing rather than a near-miss, because a near-miss of two similar colours is more noticeable than a clear contrast.

• #C4903C: mid-tone, a mustard (ΔE 7.6).
• #D89642: light, a camel (ΔE 8.3).
• #A8842C: mid-tone, a mustard (ΔE 11.3).