Cobalt blue on deep, warm skin tones (Deep Autumn)

The answer

Close, but not a match. Cobalt blue sits just outside the Deep Autumn palette. The nearest thing in the palette is #1C4450, ΔE 16.3 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 cobalt blue scores across all twelve seasons

Cobalt blue is an opinionated colour: True Winter scores it 92 and Light Spring scores it 0. A gap that wide means the colour genuinely decides something, and getting it right is worth the effort.

Deep Autumn sits 6 of twelve at 59, 33 points behind True Winter. That gap is the honest size of the compromise, not a verdict on the colour.

• True Winter: 92 (ΔE 3.2).
• Bright Winter: 79 (ΔE 8.5).
• Deep Winter: 74 (ΔE 10.3).
• Deep Autumn: 59 (ΔE 16.3) <- this season.
• Light Spring: 0 (ΔE 43.8).

What to wear instead

Nearest first. These are the colours in the Deep Autumn palette that get closest to what you wanted from cobalt blue, so the substitution costs the least.

• #1C4450: deep, a charcoal (ΔE 11.6).
• #4A2438: very deep, a burgundy (ΔE 8.3).
• #6B2438: deep, a burgundy (ΔE 3.8).