The decision for this particular color
Sleepy Blue can be considered for bathroom if its color and depth suit the space; the first design question is a blue that needs more than a warm-or-cool label. Sleepy Blue is described as warm by its manufacturer, a reason to avoid assuming every light blue has the same cool effect.
Why the cream bedding and honey wood relationship matters
Cream bedding and honey wood provide the real context for that temperature description, especially under the lamps used at night.
Sleepy Blue has an LRV of 58; Sherwin-Williams Niebla Azul SW-9137 is 53. The difference is 5 points, with Sleepy Blue returning more light under the reference measurement.
Let tile and porcelain set the limits
Compare Sleepy Blue with the largest tile field before adding towels or bath accessories. The tile is the permanent color neighbor; textiles are flexible. Review the mirror view as well as the direct wall, since reflected surfaces can add more of the chosen hue to the apparent room.
Separate the palette from the moisture specification
Use the cream fabric as the real temperature test instead of inferring an icy effect from the word blue. The undertones and neighboring colors covers that related choice. The daylight and evening-light checks covers that related choice.
Choose a Sherwin-Williams coating appropriate to the bathroom surface and follow the manufacturer's preparation and application guidance. Color SW-6225 does not identify a moisture-control system. Ventilation, substrate condition and the intended finish are separate decisions; approve the color under the real vanity lighting before ordering the full paint quantity. The trim color comparison covers that related choice. Before ordering samples, compare room-planning features in the paint color visualizer roundup.
Sources & notes
Color specifications: Sherwin-Williams Sleepy Blue SW-6225. The recorded LRV is 58. 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.

