GREENS

Rich Black

#004040

RGB 0, 64, 64 · HSL 180°, 100%, 13% · CMYK 100, 0, 0, 75

Rich Black is #004040 in HEX — rgb(0, 64, 64), hsl(180°, 100%, 13%), cmyk(100%, 0%, 0%, 75%).

Rich Black pulls into the deep end of the greens spectrum — HSL 180°, 100%, 13%. The saturated saturation makes it bold and immediate, and the hue reads cool. 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#004040

RGB0, 64, 64

HSL180°, 100%, 13%

HSV180°, 100%, 25%

CMYK100, 0, 0, 75

Decimal16448

CSS RGBrgb(0, 64, 64)

CSS HSLhsl(180, 100%, 13%)

Paint Matches — this color across 16 brands

Dulux

Prestige Green S29C9

ΔE 3.6 · #154746

Benjamin Moore

Bavarian 2054-10

ΔE 5 · #1E4644

Vista Paint

Woodland Springs K-216

ΔE 6.1 · #204749

Sherwin-Williams

Blue Peacock SW0064

ΔE 6.4 · #014E4C

Dunn-Edwards

Deep Pine DEA180

ΔE 6.9 · #254A47

RAL

Pearl Opal Green 6036

ΔE 7.5 · #193737

Hallman-Lindsay

Atlantic Waves 473

ΔE 8 · #264243

Behr

Thermal S440-7

ΔE 8.4 · #2A4A4B

Dutch Boy

Dark Green D-6751

ΔE 8.9 · #214136

Valspar

Royal Pine 5011-5

ΔE 11.4 · #315753

PPG

Deep Emerald 1148-7

ΔE 11.7 · #2A545C

Kilz

Oceans Deep TB-60

ΔE 13.1 · #395255

Farrow & Ball

Hague Blue 30

ΔE 16.1 · #3D4E57

Kobra

Green 38

ΔE 16.1 · #415448

Colorhouse

Metal .06 Metal-06

ΔE 16.6 · #3F4647

IKEA

IKEA097 97

ΔE 18 · #006673

Light Reflectance & Undertone

Light Reflectance Value (LRV)

4/100

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

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

#004040

#420000

Analogous

#004221

#004040

#002142

Triadic

#004040

#420042

#424200

Split-Complementary

#004040

#420021

#422100

Tetradic

#004040

#210042

#420000

#214200

Monochromatic

#00191A

#004040

#008F8F

#00DBDB

Rectangle

#004040

#000042

#420000

#424200

Compound

#004040

#002142

#420000

#422100

Variations

Lighter

#009B9B

#12E1E1

#7BE8E8

Darker

#003535

#002424

#001515

Saturation

#172B2B

#004242

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

11.62:1

AAA

vs Black

1.81:1

Fail

Deuteranopia

#004040

#303441

Original → Simulated

Protanopia

#004040

#3A3A40

Original → Simulated

Tritanopia

#004040

#053F3E

Original → Simulated

Color Psychology

Calm · Restorative

Rich Black 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

#3F5D4B

Warm Bulb 2700K

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

#004040

Daylight 5500K

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

#2D626F

Cool Bulb 6500K

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

Pairs With

#E7EEEE

Trim

Matched off-white

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

#F7F8F8

Ceiling

Whisper tint

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

#530909

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: #004040;

CSS — background

background-color: #004040;

CSS Variable

--color-rich-black: #004040;

Tailwind v3 — config

colors: { 'rich-black': '#004040' }

Tailwind — arbitrary

bg-[#004040] text-[#004040]

SCSS

$rich-black: #004040;

Similar Colors

Bavarian Forest

#1D4543 · ΔE 4.8

Forest Green

#174A43 · ΔE 6.2

Tucson Teal

#0B464E · ΔE 6.4

Sherwood Forest

#004E4A · ΔE 6.9

Dark Harbor

#1E4850 · ΔE 8.4

Mallard Green

#294E4F · ΔE 8.4

Pacific Sea Teal

#274043 · ΔE 9.3

Hunter Green

#2A453D · ΔE 9.3

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 #004040?

#004040 is Rich Black, a near-black green with a cool undertone.

Is #004040 warm or cool?

Rich Black reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Rich Black?

Rich Black works well in bedrooms, bathrooms, libraries. Designers typically use it for main walls, cabinetry, soft furniture.

What colors pair well with Rich Black?

Rich Black 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 Rich Black?

You can download Rich Black 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 Rich Black?

The hex code is #004040. In RGB it's 0, 64, 64, and in HSL it's 180°, 100%, 13%.

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