BLACKS

Black

#180821

RGB 24, 8, 33 · HSL 278°, 61%, 8% · CMYK 27, 76, 0, 87

Black is #180821 in HEX — rgb(24, 8, 33), hsl(278°, 61%, 8%), cmyk(27%, 76%, 0%, 87%).

Black pulls into the deep end of the blacks spectrum — HSL 278°, 61%, 8%. The balanced saturation makes it confident without overpowering, and the hue reads cool. In interior projects it shines on doors, frames, hardware, accent walls — for definition and gravitas. Reads best alongside warm white walls, oak, brass, leather.

Color Codes

HEX#180821

RGB24, 8, 33

HSL278°, 61%, 8%

HSV278°, 76%, 13%

CMYK27, 76, 0, 87

Decimal1574945

CSS RGBrgb(24, 8, 33)

CSS HSLhsl(278, 61%, 8%)

Paint Matches — this color across 16 brands

RAL

Saphire Blue 5003

ΔE 9.7 · #1D1E33

Kilz

Beetroot Purple TB-100

ΔE 14.6 · #392434

Dulux

Deep Universe S43C9

ΔE 15.3 · #2F2B3E

Benjamin Moore

Velvet CSP-480

ΔE 18.6 · #392A31

Behr

Baritone 680F-7

ΔE 18.6 · #3C304F

Vista Paint

Silent Sea C-514

ΔE 19.9 · #262627

Sherwin-Williams

Raisin SW7630

ΔE 21 · #392B2D

Hallman-Lindsay

Silent Sea 515

ΔE 21.4 · #2A2B2C

Dunn-Edwards

Old Mill DEA185

ΔE 22.7 · #343B4E

IKEA

IKEA186 186

ΔE 22.9 · #302F2F

Dutch Boy

Dark Chocolate D-6782

ΔE 23.2 · #392A27

Valspar

Twilight Purple 4010-2

ΔE 23.5 · #3E3B46

PPG

Victory Blue 1165-7

ΔE 24.5 · #3A405A

Colorhouse

Nourish .06 Nourish-06

ΔE 24.8 · #313536

Kobra

Blue 31

ΔE 24.9 · #334059

Farrow & Ball

Pitch Black 256

ΔE 26.5 · #3B3938

Light Reflectance & Undertone

Light Reflectance Value (LRV)

0/100

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 MasstoneViolet UndertoneBlue

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

Color Theory

Complementary

#180821

#112108

Analogous

#0B0821

#180821

#21081E

Triadic

#180821

#211808

#082118

Split-Complementary

#180821

#1E2108

#08210B

Tetradic

#180821

#210B08

#112108

#081E21

Monochromatic

#0F0515

#180821

#44175E

#71269C

Rectangle

#180821

#210811

#112108

#082118

Compound

#180821

#21081E

#112108

#08210B

Variations

Lighter

#4E1A6C

#8237AD

#B68AD0

Darker

#13061B

#0D0413

#08020B

Saturation

#151118

#180821

#190425

Interior Use

Best Rooms

libraries, home offices, dramatic accents

Best Uses

doors, frames, hardware, accent walls

Pairs With

warm white walls, oak, brass, leather

Accessibility (WCAG)

vs White

19.17:1

AAA

vs Black

1.10:1

Fail

Deuteranopia

#180821

#0B1221

Original → Simulated

Protanopia

#180821

#0C0C1F

Original → Simulated

Tritanopia

#180821

#160F0C

Original → Simulated

Color Psychology

Dramatic · Grounding

Black reads as punctuation — it defines edges, draws a line under a room, and makes surrounding colors look more saturated. Use it sparingly on doors, frames, hardware, and the occasional accent wall.

SymbolismPower, sophistication, depth

PersonalityConfident, anchoring, definitive

dramaframedoortrimaccentdefinition

How it looks under different light

#513334

Warm Bulb 2700K

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

#180821

Daylight 5500K

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

#3F3858

Cool Bulb 6500K

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

Pairs With

#EBE8ED

Trim

Matched off-white

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

#F7F7F8

Ceiling

Whisper tint

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

#284616

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: #180821;

CSS — background

background-color: #180821;

CSS Variable

--color-black: #180821;

Tailwind v3 — config

colors: { 'black': '#180821' }

Tailwind — arbitrary

bg-[#180821] text-[#180821]

SCSS

$black: #180821;

Similar Colors

Velvet Cloak

#382930 · ΔE 18.3

Majestic Violet

#3A3450 · ΔE 19.5

Exotic Purple

#43334D · ΔE 19.7

Old Navy

#2E3549 · ΔE 20.1

Midnight Navy

#333356 · ΔE 20.4

Bold Blue

#2B3558 · ΔE 21.5

Black

#2B2C2D · ΔE 21.7

Tulsa Twilight

#3B3339 · ΔE 21.8

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 #180821?

#180821 is Black, a near-black black with a cool undertone.

Is #180821 warm or cool?

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

What rooms work best with Black?

Black works well in libraries, home offices, dramatic accents. Designers typically use it for doors, frames, hardware, accent walls.

What colors pair well with Black?

Black pairs naturally with warm white walls, oak, brass, leather. Its complementary color is also a strong contrast option for accents.

Where can I download Black?

You can download 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 Black?

The hex code is #180821. In RGB it's 24, 8, 33, and in HSL it's 278°, 61%, 8%.

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