Your search for "slate blue" revealed the following:

Bluey Balloon Garlands | Blue, Blush and Paw Print

$40.75

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260 | Tuftex Latex Balloons | Package 10

$2.50

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11 INCH | Sempertex (Betallatex) Latex Balloons | Package 10

$3.50

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24 INCH | Sempertex (Betallatex) Latex Balloons | Each

$4.00

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18 INCH | Sempertex (Betallatex) Latex Balloons | Package 6

$5.00

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