BLUES

Shale Grey

#899DA3

RGB 137, 157, 163 · HSL 194°, 12%, 59% · CMYK 16, 4, 0, 36

Shale Grey is #899DA3 in HEX — rgb(137, 157, 163), hsl(194°, 12%, 59%), cmyk(16%, 4%, 0%, 36%).

Shale Grey pulls into the mid-tone end of the blues spectrum — HSL 194°, 12%, 59%. The neutral saturation makes it near-neutral and forgiving, and the hue reads cool. In interior projects it shines on bedrooms, bathrooms, home offices — for calm, focused environments. Reads best alongside warm white trim, oak or walnut, brass or matte black hardware.

Color Codes

HEX#899DA3

RGB137, 157, 163

HSL194°, 12%, 59%

HSV194°, 16%, 64%

CMYK16, 4, 0, 36

Decimal9018787

CSS RGBrgb(137, 157, 163)

CSS HSLhsl(194, 12%, 59%)

Paint Matches — this color across 16 brands

Dulux

Palmer SG5C3

ΔE 1.2 · #8A9EA6

PPG

Symphony Of Blue 1035-4

ΔE 1.4 · #89A0A6

Benjamin Moore

James AC-23

ΔE 1.5 · #87999F

Sherwin-Williams

Debonair SW9139

ΔE 2 · #90A0A6

Colorhouse

Water .05 Water-05

ΔE 2.4 · #82979D

Behr

Rainy Season MQ5-27

ΔE 2.4 · #8399A2

Dunn-Edwards

Cape Cod Blue DEC792

ΔE 2.5 · #91A2A6

Hallman-Lindsay

Standish Blue historic-standish-blue

ΔE 2.8 · #85979A

Valspar

Blue Twilight 5001-1C

ΔE 3 · #919EA1

Vista Paint

Ocean Melody C-498

ΔE 3.2 · #7E99A0

Kilz

Endless Rain RE150-02

ΔE 4.1 · #8DA7AF

RAL

Silver Grey 7001

ΔE 4.5 · #8A9597

Farrow & Ball

Oval Room Blue 85

ΔE 4.5 · #8B9D9B

IKEA

IKEA158 158

ΔE 4.9 · #7C9195

Kobra

Grey 42

ΔE 6.2 · #889099

Dutch Boy

Dusky Mood DCP-1318

ΔE 9.2 · #A6ACB8

Light Reflectance & Undertone

Light Reflectance Value (LRV)

32/100

Medium

0 · DarkLight · 100

Balanced reflectance — holds colour without washing out. Versatile for most rooms and the most forgiving range for true-to-chip results.

Undertone

TemperatureCool MasstoneTeal UndertoneGreen

Reads as a cool teal with a green undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#899DA3

#A3908A

Analogous

#8AA39C

#899DA3

#8A91A3

Triadic

#899DA3

#A38A9D

#9DA38A

Split-Complementary

#899DA3

#A38A91

#A39C8A

Tetradic

#899DA3

#9C8AA3

#A3908A

#91A38A

Monochromatic

#414F53

#63777E

#899DA3

#B5C1C5

#E0E5E6

Rectangle

#899DA3

#908AA3

#A3908A

#9DA38A

Compound

#899DA3

#8A91A3

#A3908A

#A39C8A

Variations

Lighter

#A1B1B5

#BAC4C7

#D7DCDD

Darker

#698088

#48595E

#2A3437

Saturation

#93989A

#8A9DA3

#5CB6D1

Interior Use

Best Rooms

bedrooms, bathrooms, home offices

Best Uses

main walls, ceilings, trim, cabinetry

Pairs With

warm white trim, oak or walnut, brass or matte black hardware

Accessibility (WCAG)

vs White

2.83:1

Fail

vs Black

7.42:1

AAA

Deuteranopia

#899DA3

#9497A4

Original → Simulated

Protanopia

#899DA3

#9A9AA2

Original → Simulated

Tritanopia

#899DA3

#899E9C

Original → Simulated

Color Psychology

Focused · Cooling

Shale Grey lowers the temperature of a room — useful in south-facing rooms that overheat visually, and in home offices where you want a clear head. Pair with warm wood and brass to keep it from reading clinical.

SymbolismTrust, depth, stability

PersonalityClear-headed, dependable, contemplative

focustrustcalmofficebedroomdepth

How it looks under different light

#A6A295

Warm Bulb 2700K

Incandescent / soft white LED — pulls colour toward yellow/amber.

#899DA3

Daylight 5500K

Midday natural light or daylight-spec LED — closest to the paint chip.

#93A7BA

Cool Bulb 6500K

Cool white LED / overcast daylight — pulls colour toward blue.

Pairs With

#EAEBEB

Trim

Matched off-white

Same hue at 92% lightness — trim reads coordinated, not stark.

#F7F7F7

Ceiling

Whisper tint

Near-white with a hint of the hero's undertone — ceiling feels intentional.

#A06F60

Accent

Complementary punch

Hue +180°, slightly muted for paint vs. screen — use on a door, frame, or single piece.

#574738

Floor

Walnut neutral

Warm mid-brown grounds the scheme regardless of hero hue.

Paint Info

Brand · Product Line

Benjamin Moore / Regal Select Interior

Recommended Finishes

Eggshell (walls) · Pearl (trim) · Matte (ceiling)

Eggshell hides imperfections on main walls while keeping the color rich; pearl on trim adds subtle sheen and easier cleaning; flat matte on ceilings prevents glare.

Best Surfaces

Primary walls · Cabinetry · Trim · Soft furniture

Coverage & Dry Time

Typical coverage 350-400 sq ft per gallon over a primed surface.

Touch-dry in ~1 hour. Recoat after 4 hours. Full cure 7-14 days.

Primer

Standard primer is adequate.

Application Tip

Use a 9" microfiber roller on walls and a 2.5" angled sash brush for trim cuts. Two coats minimum for even depth.

Paint Calculator

Wall area (m²)

Coats

Coverage (m² / L)

You'll need

4.0 litres

1.06 US gallons · room for one touch-up coat. Buy slightly more to ensure single-batch match.

Code Snippets

CSS — color

color: #899DA3;

CSS — background

background-color: #899DA3;

CSS Variable

--color-shale-grey: #899DA3;

Tailwind v3 — config

colors: { 'shale-grey': '#899DA3' }

Tailwind — arbitrary

bg-[#899DA3] text-[#899DA3]

SCSS

$shale-grey: #899DA3;

Similar Colors

Van Courtland Blue

#86989E · ΔE 1.9

Province Blue

#829BA1 · ΔE 2.1

Dusty Cornflower

#8CA4AD · ΔE 3.2

Cloudy Sky

#8F9D9E · ΔE 3.4

Jamestown Blue

#82A0A6 · ΔE 3.5

Sea Star

#889E9E · ΔE 3.5

Amsterdam

#81949D · ΔE 3.7

Franklin Lakes

#84A0AB · ΔE 3.8

Built by DSGN.HOUSE Updated 2026

Our color tools run on our own catalogue of 26,000+ real paint colors across 16 brands — Benjamin Moore, Sherwin-Williams, Behr, Dulux, RAL and more — with the color math (HSL and CIELAB matching) computed in-house, not scraped from summaries. Every color you pick maps to a real, buyable paint with its code, so what you see here you can actually take to the store. We review and update these tools and their data regularly.

Created by Denis Kataev, founder of DSGN.HOUSE — a software engineer and digital entrepreneur building professional color-design tools for everyone.

Frequently Asked Questions

What color is #899DA3?

#899DA3 is Shale Grey, a mid-tone blue with a cool undertone.

Is #899DA3 warm or cool?

Shale Grey reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Shale Grey?

Shale Grey works well in bedrooms, bathrooms, home offices. Designers typically use it for main walls, ceilings, trim, cabinetry.

What colors pair well with Shale Grey?

Shale Grey pairs naturally with warm white trim, oak or walnut, brass or matte black hardware. Its complementary color is also a strong contrast option for accents.

Where can I download Shale Grey?

You can download Shale Grey on DSGN.HOUSE in 15 designer formats including CSS gradient, Figma, Procreate swatches, Tailwind config, Adobe ASE, SVG, and 4K wallpapers — all free.

What's the hex code for Shale Grey?

The hex code is #899DA3. In RGB it's 137, 157, 163, and in HSL it's 194°, 12%, 59%.

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