Ref. #3F5A5F · RE290-02
Fathoms Below
9%LRV Value
Cool (Blue)Undertone
Fathoms Below Technical Profile
What color is Fathoms Below? It's a dark cool blue with the hex code #3F5A5F. Colors similar to Fathoms Below include Benjamin Moore Olympus Green, MPC Cape Breton Green, Hirshfield's Volute. Fathoms Below has a cool (blue) undertone, which affects how it pairs with trim, flooring, and adjacent wall colors. With an LRV of 9, Fathoms Below creates a dramatic, enveloping mood — best on accent walls, dining rooms, and intimate spaces where atmosphere matters more than reflected light. Pair it with cool whites like Chantilly Lace, walnut or rift-cut oak floors, and brushed nickel or polished chrome hardware. Brass accents add warmth for a layered look. Blues stay crisp under 4000K+ cool LEDs. Under 2700K warm bulbs they can read grayer or shift slightly purple — particularly true for mid-tone and saturated blues.
Colors Similar to Fathoms Below
Closest digital match based on color values. Always verify with physical samples.
Recommended Pairings
Colors That Work With Fathoms Below
Timeless pairing with clean white trim and a tonal accent wall
Side Walls
Fathoms Below
#3F5A5F
Accent Wall
Tonal Shift
A warm shift that adds depth without clashing.
#54627D
Trim & Molding
Pure White
Crisp white trim for a clean, traditional look.
#FFFFFF
Color Palettes for Fathoms Below
Color harmonies based on color theory — each swatch links to the closest matching paint.
Opposite on the color wheel — creates vibrant contrast
Fathoms Below 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 Kilz Colors
Other Kilz colors close to Fathoms Below.
More blue colors from other brands
Cross-brand colors in the blue family — useful when you want a similar look from a different brand.
Fathoms Below — Frequently Asked Questions
What undertone does Fathoms Below have?
Fathoms Below by Kilz has a cool (blue) undertone and belongs to the blue color family.
What colors match Fathoms Below from other brands?
The closest matches are Olympus Green by Benjamin Moore (#3E595C), Cape Breton Green by MPC (#415C5F), Volute by Hirshfield's (#445A5E). Always verify with physical samples.
What is the LRV of Fathoms Below?
Fathoms Below has an LRV of 9.2, where 0 is pure black and 100 is pure white.
Explore More with Fathoms Below
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 Fathoms Below's cool (blue) undertone matters more than its surface color — and how to read undertones in any paint chip.