GREENS

Mountain Range Green

#283123

RGB 40, 49, 35 · HSL 99°, 17%, 16% · CMYK 18, 0, 29, 81

Mountain Range Green is #283123 in HEX — rgb(40, 49, 35), hsl(99°, 17%, 16%), cmyk(18%, 0%, 29%, 81%).

Mountain Range Green pulls into the deep end of the greens spectrum — HSL 99°, 17%, 16%. The neutral saturation makes it near-neutral and forgiving, and the hue reads warm. In interior projects it shines on bedrooms, bathrooms, libraries — for grounding, restorative spaces. Reads best alongside soft white walls, oak floors, brass, warm clay accents.

Color Codes

HEX#283123

RGB40, 49, 35

HSL99°, 17%, 16%

HSV99°, 29%, 19%

CMYK18, 0, 29, 81

Decimal2634019

CSS RGBrgb(40, 49, 35)

CSS HSLhsl(99, 17%, 16%)

Paint Matches — this color across 16 brands

RAL

Fir Green 6009

ΔE 3.7 · #31372B

Behr

Thorny Branch S-H-780

ΔE 5.2 · #343B2F

Benjamin Moore

Essex HC-188

ΔE 5.4 · #28372F

Colorhouse

Wood .06 Wood-06

ΔE 5.8 · #312F24

Sherwin-Williams

Roycroft Bottle Green SW2847

ΔE 8.1 · #324038

Dulux

Finnegan SG5H9

ΔE 8.5 · #323F39

Kilz

Rebel RM260

ΔE 9.1 · #373632

Vista Paint

Carbon Copy K-816

ΔE 9.7 · #3C3731

IKEA

IKEA186 186

ΔE 10.7 · #302F2F

Dutch Boy

Dark Green D-6751

ΔE 10.8 · #214136

Hallman-Lindsay

Silent Sea 515

ΔE 11.1 · #2A2B2C

Kobra

Black 44

ΔE 11.4 · #383737

Farrow & Ball

Pitch Black 256

ΔE 11.5 · #3B3938

Dunn-Edwards

Black DEA187

ΔE 12 · #3B3A3A

Valspar

Aged Pine 6011-5

ΔE 12.8 · #444B43

PPG

Dark As Night 14-05

ΔE 13.3 · #3D4645

Light Reflectance & Undertone

Light Reflectance Value (LRV)

3/100

Very Dark

0 · DarkLight · 100

Absorbs almost all light — dramatic and cocooning. Needs strong artificial lighting and works best as an accent or in well-lit rooms.

Undertone

TemperatureNeutral MasstoneYellow-Green UndertoneYellow

Reads as a neutral yellow-Green with a yellow undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#283123

#2B2230

Analogous

#2E3022

#283123

#223024

Triadic

#283123

#222730

#302227

Split-Complementary

#283123

#242230

#30222E

Tetradic

#283123

#222E30

#2B2230

#302422

Monochromatic

#0C0F0B

#283123

#4B5C42

#6F8961

Rectangle

#283123

#22302B

#2B2230

#302227

Compound

#283123

#223024

#2B2230

#30222E

Variations

Lighter

#4F6245

#79916C

#B1BDAB

Darker

#1F261B

#151B12

#0C100B

Saturation

#282B27

#273022

#224111

Interior Use

Best Rooms

bedrooms, bathrooms, libraries

Best Uses

main walls, cabinetry, soft furniture

Pairs With

soft white walls, oak floors, brass, warm clay accents

Accessibility (WCAG)

vs White

13.52:1

AAA

vs Black

1.55:1

Fail

Deuteranopia

#283123

#2F2D24

Original → Simulated

Protanopia

#283123

#303025

Original → Simulated

Tritanopia

#283123

#292F30

Original → Simulated

Color Psychology

Calm · Restorative

Mountain Range Green sits in the part of the spectrum the eye relaxes into. Designers reach for green when a room needs to feel like a refuge — bedrooms, libraries, bathrooms — because it lowers visual blood-pressure without flattening the space.

SymbolismGrowth, balance, nature

PersonalitySteady, grounded, thoughtful

calmnaturerestorativebalancebedroomlibrary

How it looks under different light

#5D5135

Warm Bulb 2700K

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

#283123

Daylight 5500K

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

#4B565A

Cool Bulb 6500K

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

Pairs With

#EAEBEA

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.

#312239

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 / Aura Interior (for richer color depth in deep tones)

Recommended Finishes

Matte (walls) · Pearl (trim) · Satin (doors)

Deep colors look best in matte — gloss exaggerates surface flaws. Reserve subtle sheen for trim, doors, and high-touch areas.

Best Surfaces

Accent walls · Doors · Cabinetry · Built-ins

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

Tinted primer in a similar value is highly recommended — saves a coat and prevents the wall colour from washing the surface.

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: #283123;

CSS — background

background-color: #283123;

CSS Variable

--color-mountain-range-green: #283123;

Tailwind v3 — config

colors: { 'mountain-range-green': '#283123' }

Tailwind — arbitrary

bg-[#283123] text-[#283123]

SCSS

$mountain-range-green: #283123;

Similar Colors

Essex Green

#27362E · ΔE 5.2

Waller Green

#363A32 · ΔE 6.8

Black Forest Green

#242E2C · ΔE 8.3

Black Knight

#303536 · ΔE 10.8

River Rock

#464233 · ΔE 10.9

Black Satin

#313435 · ΔE 10.9

Onyx

#353434 · ΔE 11.0

Black

#2B2C2D · ΔE 11.0

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 #283123?

#283123 is Mountain Range Green, a near-black green with a warm undertone.

Is #283123 warm or cool?

Mountain Range Green reads warm, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Mountain Range Green?

Mountain Range Green works well in bedrooms, bathrooms, libraries. Designers typically use it for main walls, cabinetry, soft furniture.

What colors pair well with Mountain Range Green?

Mountain Range Green pairs naturally with soft white walls, oak floors, brass, warm clay accents. Its complementary color is also a strong contrast option for accents.

Where can I download Mountain Range Green?

You can download Mountain Range Green 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 Mountain Range Green?

The hex code is #283123. In RGB it's 40, 49, 35, and in HSL it's 99°, 17%, 16%.

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