I understand that printing multicontrast paper with a cold light head may require a Wratten CC40Y filter (in addition to the contrast filter). I happen to have laying around here a set of Cibachrome filters, including a 40Y.
Are they the same? Given that the "40" is intensity and the "Y" is color, I would think so. They are at least roughly the same color (judging by screen shots of the Wratten filter).
Are they the same? Given that the "40" is intensity and the "Y" is color, I would think so. They are at least roughly the same color (judging by screen shots of the Wratten filter).

