Kale does NOT need light to germinate, but it is slow to germinate (can take 2 weeks) so be patient.
Warmth will speed up the germination, so if you have a warm spot to keep it in, or a heat mat, that speeds things up a bit.
Thanks Diana. I’m out in the desert, so warmth isn’t a problem. In fact I’m hoping it will have cooled considerably by the time the seedlings are ready to transplant . . . Desert gardening is do-able, but it can be tricky! I discovered recently that the roots of the mesquite trees yards away had grown under the clourtyard wall and up into my little raised beds! Their fine roots were everywhere.