Begin with the weaker light
Cotton can be assessed for a north-facing room, but the direction alone cannot determine the result. Its LRV is 83; the key concern is a white specified by code and by its neighbors . Cotton's high LRV supplies a clear lightness reference, but the available description does not support a precise undertone claim.
Why the limestone and white upholstery relationship matters
Limestone and white upholstery create a close palette in which the actual material boundary should decide the preferred white.
Cotton has an LRV of 83; Sherwin-Williams Greek Villa SW-7551 is 84. The difference is 1 points, with Greek Villa returning more light under the reference measurement.
Keep the surroundings in the test
Begin where Cotton meets the permanent white fixture on the least illuminated wall. A pale paint still requires light, and a high LRV cannot make that fixture relationship disappear. Check the daytime boundary and repeat under the lamps that carry the room after sunset.
A lighting result needs a practical decision
Use the actual stone to assess the white; the published data do not justify a universal undertone promise. The situations that call for another color covers that related choice.
Window size, obstruction and season still matter when choosing Cotton. A compass direction is not a brightness measurement. In the Northern Hemisphere, north-facing daylight is often less directly sunlit; the actual room remains the test. The daylight and evening-light checks covers that related choice. Before ordering samples, compare room-planning features in the paint color visualizer roundup.
Sources & notes
Color specifications: Sherwin-Williams Cotton SW-9581. The recorded LRV is 83. Named comparison values come from the respective manufacturers; material schemes are editorial suggestions.
This guide reviews published color information and proposes practical sample checks. It does not claim first-hand paint testing or customer-review scores. Sherwin-Williams does not sponsor or endorse this site. Product names and trademarks belong to their respective owners. Confirm the color in a physical sample and select the coating for the actual surface and finish.