Start with the documented color character
Cotton SW-9581 is a high-reflectance white; its numerical reference is more useful than guessing an undertone from the name. A physical comparison is needed to decide how that character works with your own finishes. 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. Greek Villa is a bright, softly warm white; the manufacturer emphasizes its response to natural light. This supplies a named color control; the LRV gap alone does not identify the warmer, greener or pinker paint.
Use Greek Villa as a control
Use the fixed cabinet or ceramic white as the starting reference for Cotton. Compare the joint in daylight before adding colored fabrics. Then introduce Greek Villa and remove it again: the useful cast is the one seen beside the fixture that will remain, not only between competing paint samples.
Separate a persistent cast from a comparison effect
Use the actual stone to assess the white; the published data do not justify a universal undertone promise. The warm-versus-cool comparison covers that related choice.
If the unwanted cast remains beside a permanent finish under normal light, that is a practical reason to replace Cotton. If it appears only beside an unused sample, remove the comparison and assess the intended palette alone. 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.

