Nickel is the 28th element. Though it does not have a known use in the body, some plants and bacteria utilize nickel. See Tones of Nickel to learn more.

Angstrom	Nanometer	Color	Hertz	Note	Hertz
2310.961	231	Ultraviolet	589.93
2320.034	232	Ultraviolet	587.62	D5	587.33
2345.543	235	Ultraviolet	581.23
3002.485	300	Ultraviolet	454.06	A#4	466,164
3012.001	301	Ultraviolet	452.62
3050.816	305	Ultraviolet	446.86
3101.557	310	Ultraviolet	439.55	A4	440
3134.104	313	Ultraviolet	434.99
3414.764	341	Ultraviolet	399.24
3446.259	345	Ultraviolet	395.59
3458.46	346	Ultraviolet	394.19
3461.652	346	Ultraviolet	393.83	G4	391.995
3492.956	349	Ultraviolet	390.3
3515.052	352	Ultraviolet	387.85
3524.536	352	Ultraviolet	386.8
3566.372	357	Ultraviolet	382.26
3619.39	362	Ultraviolet	376.67	F#4	369.994

All of the colors are in the Ultra-Violet range.

Nickel Scale

Nickel Sound Sketch