Paint Color Consultants

Benjamin Moore

Millstone Gray

1581

Benjamin Moore Millstone Gray (1581) is a deep gray with a pronounced green undertone that distinguishes it from neutral or blue-leaning grays. With an LRV of 16.96, it absorbs a significant amount of light, making it best suited for spaces where low reflectance is intentional. The green cast becomes more apparent in daylight and can shift toward olive under warm artificial lighting.

It coordinates naturally with the lighter gray-green of Duxbury Gray (HC-163), the deeper weight of Dakota Shadow (448), the muted warmth of Wall Street (CSP-20), and the balanced mid-tone of Gray Gardens (CSP-55).
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Brand

Benjamin Moore

Code

1581

Collection

Benjamin Moore Classics

Millstone Gray in Different Light

Light temperature is measured in Kelvin: a warm 2700K bulb pulls colors toward yellow, while 5000K daylight reads cooler and truer. Check the color at the time of day you actually use the room.

Artificial Lighting

Bedroom scene to simulate Benjamin Moore Millstone Gray under artificial light

Natural Lighting

Living room scene to simulate Benjamin Moore Millstone Gray under natural light

Technical Specifications

Undertones

Type

Green

Strength

Very Low

Temperature

neutral

Hue Angle

120°

Green Family

Lightness

43%

Medium

Saturation

3%

Near Neutral

LRV

17.0
0%100%
Very Dark
Dark
Medium
Light
Very Light
White

LRV measures how much light a color reflects, from 0 (black) to 100 (pure white). Below about 50 a color needs good lighting to avoid going flat, 60 and up helps brighten a room, and most whites sit above 80.

Color Position
Saturation →
Lightness →

Color Codes

HEX
#6A716A
RGB Decimal
106, 113, 106
RGB Percent
41.6%, 44.3%, 41.6%
HSL
120.0, 3.2%, 42.9%
HSV
120.0, 6.2%, 44.3%
CMYK
6.2%, 0.0%, 6.2%, 55.7%
YIQ
110.1, -1.9, -3.7
XYZ
14.45, 15.92, 15.95
CIE Lab
46.86, -4.10, 2.96
CIE Luv
46.86, -3.54, 4.57
Hunter Lab
39.89, -3.12, 2.23
Decimal
6975850

Coordinating Colors and Color Palettes

Darker Shades

Monochromatic dark

Millstone GrayBlack WidowSpace BlackSable Calm

Lighter Shades

Monochromatic light

Millstone GrayIntrigueStepping StoneSolitary State

Complementary

Opposite on color wheel

Millstone GrayPlum ShadowPaean BlackNovel Lilac

Analogous

Adjacent colors

Millstone GrayCity ShadowSage SlateRocky Coast

Closest Paint Matches

Cross-brand matches are close, never exact. Each brand uses different bases and sheens, so sample before you buy gallons.

Benjamin Moore

Millstone Gray

Valspar

Sea Grove

Benjamin Moore

Millstone Gray

Behr

Shadows

Benjamin Moore

Millstone Gray

Behr

Heritage Park

Benjamin Moore

Millstone Gray

Behr

Dark Ash

Benjamin Moore

Millstone Gray

Glidden

Up In Smoke

Benjamin Moore

Millstone Gray

Valspar

Campground

Benjamin Moore

Millstone Gray

Valspar

Victorian Tapestry

Benjamin Moore

Millstone Gray

Sherwin Williams

Homburg Gray

Benjamin Moore

Millstone Gray

Valspar

Portland Twilight

Benjamin Moore

Millstone Gray

Behr

Welded Iron

Benjamin Moore

Millstone Gray

Benjamin Moore

Gunmetal

Benjamin Moore

Millstone Gray

Glidden

Slate Mine

Benjamin Moore

Millstone Gray

Benjamin Moore

Cushing Green

Benjamin Moore

Millstone Gray

Benjamin Moore

Arctic Seal

Benjamin Moore

Millstone Gray

Valspar

Almost Charcoal

Benjamin Moore

Millstone Gray

Benjamin Moore

Rocky Coast