Debonair and Stardew: the documented difference
Debonair has an LRV of 34; Sherwin-Williams Stardew SW-9138 is 43. The difference is 9 points, with Stardew returning more light under the reference measurement. Choose by the material relationship as well as the number. Debonair occupies a middle ground between pale slate blues and near-black navies. Stardew is a balanced slate blue with a medium reflectance value.
| Color | Brand / code | LRV |
|---|---|---|
| Debonair | Sherwin-Williams SW-9139 | 34 |
| Stardew | Sherwin-Williams SW-9138 | 43 |
The choice beside cream walls and brushed brass
Cream walls allow blue millwork to become the architectural color, with brass used as a smaller highlight rather than the main contrast.
Set up both candidates with cream walls and brushed brass. Use equal-sized boards with the intended finishes and place them in the same orientation. Do not put one directly beside a window and leave the other in shadow. A difference that follows the position rather than the board is a lighting observation, not evidence that the formula changed.
What the comparison can—and cannot—settle
For a second point of reference, Slate Tile is recorded at LRV 15. The undertones and neighboring colors covers that related choice.
Review the blue on a vertical panel from across the room; use its medium depth to separate the millwork. Assess Debonair and Stardew alone as well as side by side. The unchosen board will not remain in the finished room, and a preference created only by that neighbor may not survive its removal. Before ordering samples, compare room-planning features in the paint color visualizer roundup.
Sources & notes
Color specifications: Sherwin-Williams Debonair SW-9139. The recorded LRV is 34. 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.

