Boisterous Blue 4009-6 is a blue paint color from Valspar. It has a hex value of #375264, LRV 8 and a neutral undertone. Its closest cross-brand match is Day Spa from Hirshfield's (nearly identical), with 49 more equivalents across other brands.
Ref. #375264 · 4009-6
Boisterous Blue
8%LRV Value
NeutralUndertone
Boisterous Blue Technical Profile
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Boisterous Blue in Every Brand
The closest equivalent to Boisterous Blue in each major paint brand, ranked by how close the match reads. Always verify with a physical sample. How we calculate match accuracy →
ValsparBoisterous Blue
Nearly identical
Hirshfield'sDay Spa
Day Spa
Hirshfield's
Nearly identical
Midnight Blue
Behr
Nearly identical
Day Spa
Vista Paint
Nearly identical
Summer Night
Dunn-Edwards
Very similar
Alaskan Night
Dutch Boy
Very similar
Regatta Bay
PPG
Very similar
Endless Sea
Sherwin-Williams
Very similar
Summer Nights
Benjamin Moore
Very similar
Saxophone Solo
Kilz
Very similar
Hague Blue
Farrow & Ball
Very similar
Wool .06
Colorhouse
Very similar
Azure Blue
RAL
Visible difference
Comparing these brands? Order peel-and-stick samples of your top matches — Samplize buy 8 peel-and-stick samples, get 2 free.
Recommended Pairings
Colors That Work With Boisterous Blue
Timeless pairing with clean white trim and a tonal accent wall
Side Walls
Boisterous Blue
#375264
Accent Wall
Tonal Shift
A warm shift that adds depth without clashing.
#52577C
Trim & Molding
Pure White
Crisp white trim for a clean, traditional look.
#FFFFFF
Color Palettes for Boisterous Blue
Color harmonies based on color theory — each swatch links to the closest matching paint.
Opposite on the color wheel — creates vibrant contrast
Boisterous Blue Room Palettes
Color schemes built around this color — each swatch links to the closest matching paint.
Warm & Inviting
Warm tones with cozy appeal — welcoming and comfortable
Cool & Calm
Cool hues with soft contrast — serene and restful
Bold Contrast
Complementary hues with punch — dynamic and striking
Similar Valspar Colors
Other Valspar colors close to Boisterous Blue.
More blue colors from other brands
Cross-brand colors in the blue family — useful when you want a similar look from a different brand.
Boisterous Blue — Frequently Asked Questions
What undertone does Boisterous Blue have?
Boisterous Blue by Valspar has a neutral undertone and sits in the blue color family. The undertone shifts with light — warmer under 2700K bulbs, cleaner and cooler under 4000K daylight — so sample Boisterous Blue in your own space before committing.
What colors match Boisterous Blue from other brands?
The closest cross-brand equivalents to Boisterous Blue are Day Spa by Hirshfield's (a near-identical match), Midnight Blue by Behr (a near-identical match), Opera Glasses by Behr (a near-identical match) — the best options for getting Boisterous Blue's look from a brand your local store carries. Confirm with a physical sample, since sheen and lighting shift the final result.
What is the LRV of Boisterous Blue?
Boisterous Blue has a Light Reflectance Value (LRV) of 7.8, on a scale where 0 is pure black and 100 is pure white — that makes it a deep, dramatic color best saved for accent walls, dining rooms, and cozy spaces where atmosphere matters more than reflected light.
Explore More with Boisterous Blue
Related Reading
How to Match Paint Colors Across Brands
The science behind Delta E and CIEDE2000 — find a Behr equivalent of any Sherwin-Williams shade, or a Benjamin Moore alternative when your store is out of stock.
Understanding Paint Color Undertones
Why Boisterous Blue's neutral undertone matters more than its surface color — and how to read undertones in any paint chip.