Brittany Blue (CW-605)
A soft coastal blue from the Williamsburg Collection. Named for the French coast, it carries a breezy, maritime quality. More blue than gray, lighter than Boothbay Gray.
About Benjamin Moore Brittany Blue
Brittany Blue (CW-605) is a blue from Benjamin Moore's collection with an LRV of 47.22 and soft coastal blue undertones. A soft coastal blue from the Williamsburg Collection. Named for the French coast, it carries a breezy, maritime quality. More blue than gray, lighter than Boothbay Gray.
At an LRV of 47.22, Brittany Blue is a medium-depth color with real presence on the wall. It will add noticeable color and warmth to a room, creating a more cocooning, intimate atmosphere than lighter colors. It works beautifully in rooms with good natural light, and can be used on accent walls in rooms where a full application might feel too enclosed. Pair it with a bright white trim color (LRV 85+) for clean contrast.
Light Reflectance Value (LRV)
Brittany Blue has an LRV of 47.22, placing it in the medium range on the 0-to-100 scale. LRV measures the percentage of visible light a color reflects. A pure black has an LRV of 0 and a pure white has an LRV of 100. Understanding a color's LRV helps you predict how it will feel in your space: higher LRV means brighter and more spacious, lower LRV means cozier and more intimate.
Undertone Analysis
Brittany Blue has soft coastal blue undertones. Undertones are the subtle background colors that become visible in different lighting conditions. Even colors that look "neutral" in the store will reveal their undertones once they are on your walls and interacting with natural light, artificial light, and the colors around them.
A soft coastal blue from the Williamsburg Collection. Named for the French coast, it carries a breezy, maritime quality. More blue than gray, lighter than Boothbay Gray. Neutral undertones give you the most flexibility in decorating. This color should coordinate well with both warm elements (wood, brass, cream) and cool elements (chrome, marble, blue-gray), making it a versatile foundation for any design direction.
Lighting Behavior
The blue is soft and coastal. In bright rooms fresh and inviting. In dim rooms a calm, cool neutral.
Every paint color looks different depending on the light source in your room. South-facing rooms get warm, direct sunlight that brings out yellow and warm undertones. North-facing rooms get cool, indirect light that emphasizes blue and gray undertones. East-facing rooms are bright and warm in the morning, cooler in the afternoon. West-facing rooms are the opposite: cool morning, warm afternoon. Incandescent and warm LED bulbs push colors warmer, while cool-white LEDs and fluorescent tubes push colors cooler. To avoid surprises, always test Brittany Blue with a physical sample on your actual wall, and observe it at different times of day before committing.
Best Rooms for Brittany Blue
Benjamin Moore recommends Brittany Blue for: bathroom, bedroom, living room, nursery, kitchen.
Closest Matches in Other Brands
Find the closest equivalent to Benjamin Moore Brittany Blue from other paint brands. Matches are calculated using Delta E (CIE2000), the industry standard for measuring perceptual color difference.
Sherwin Williams Matches
Rainwashed is greener. Brittany Blue is bluer.
View all Sherwin Williams matches →Behr Matches
Coordinating Colors
These colors pair beautifully with Brittany Blue for a cohesive palette. Use them for trim, accents, adjacent rooms, or furniture to create a well-designed space.
Frequently Asked Questions
The closest Sherwin Williams match for Benjamin Moore Brittany Blue is Rainwashed (SW 6211) with a Delta E of 4.4, which rates as a "good match" match. Rainwashed is greener. Brittany Blue is bluer. A Delta E under 2 means most people cannot tell the colors apart, while 2 to 4 means the difference is subtle.
Brittany Blue has soft coastal blue undertones. A soft coastal blue from the Williamsburg Collection. Named for the French coast, it carries a breezy, maritime quality. More blue than gray, lighter than Boothbay Gray. Undertones become most visible when the color is on a large surface like a wall, and they shift depending on the light source in your room. Always test with a physical sample in your specific space to see how the undertones interact with your lighting, flooring, and furnishings.
Brittany Blue (CW-605) has a Light Reflectance Value (LRV) of 47.22, which puts it in the medium range. LRV measures the percentage of light a color reflects on a scale from 0 (pure black) to 100 (pure white). At 47.22, this is a medium-depth color that adds warmth and character while still reflecting a reasonable amount of light.
Brittany Blue leans neutral, with soft coastal blue undertones that do not strongly push warm or cool. This makes it one of the more versatile colors in its family, pairing well with both warm and cool accent colors and finishes. The blue is soft and coastal. In bright rooms fresh and inviting. In dim rooms a calm, cool neutral.
Color data sourced from manufacturer specifications. Match calculations use Delta E (CIE2000) computed from Lab color space conversion. Last reviewed: March 22, 2026.