Which gel to simulate sunlight?

I'd like to make fake sunlight by setting up a speedlight outside the window, spilling in through the blinds. Which gel, from my rosco pack should I use, and do I need to set my cameras WB to any particular kelvin setting? Please advise! Thanks

The gel you pick depends on what you want the sunlight to look like. Do you want a late afternoon sunset glow? Is that going to be your primary light. It might help if you fully describe the photo you envision.

If you are looking for that warm light look then you want to use a CTO filter.

Your speedlite is already very close to mid day sunlight. If you want to lower the temperature, you'll want CTO gels (or 1/2 CTO, 1/4 CTO, etc) while leaving the camera's WB set to daylight.

shoot at noon and you dont need a gel lol