Northern light has a blue tint. Northern light also tends to wash out pale colors, so you are better off with more color. Use warm colors with gold, orange or red tints. An article by Benjamin Moore Paints recommended Wheeling Neutral as a color for northern light. Below is their color visualizer photo of this color. My photo program says the color has a gold tint. The window trim is Mountain Peak White which also has a gold tint.

Regardless, of what anyone recommends you should buy samples to paint on foamboard. That way you can move the boards around the room to see how they look in light and shadow. Don't forget to view the colors under interior lights. IMO, bathrooms are best lit with warm white bulbs. Daylight bulbs give off blue light and are harsh to skin tones.

Go get a fistful of creams and whites on paint strips and find matches to the wall tile. Then get sample pots of those to try in your light.