Begin with the weaker light
Debonair can be assessed for a north-facing room, but the direction alone cannot determine the result. Its LRV is 34; the key concern is blue millwork without the near-black weight of navy . Debonair occupies a middle ground between pale slate blues and near-black navies.
Why the cream walls and brushed brass relationship matters
Cream walls allow blue millwork to become the architectural color, with brass used as a smaller highlight rather than the main contrast.
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.
Keep the surroundings in the test
Assess Debonair against the actual warm and cool materials in the shaded room. A blue or green appearance may be exactly the point, or it may conflict with the brief. The compass direction is background information; the particular window, view and material boundary establish the useful test.
A lighting result needs a practical decision
Review the blue on a vertical panel from across the room; use its medium depth to separate the millwork. The situations that call for another color covers that related choice.
Window size, obstruction and season still matter when choosing Debonair. 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 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.

