BLUES

Blue

#17323F

RGB 23, 50, 63 · HSL 200°, 47%, 17% · CMYK 63, 21, 0, 75

Blue is #17323F in HEX — rgb(23, 50, 63), hsl(200°, 47%, 17%), cmyk(63%, 21%, 0%, 75%).

Blue pulls into the deep end of the blues spectrum — HSL 200°, 47%, 17%. The balanced saturation makes it confident without overpowering, 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#17323F

RGB23, 50, 63

HSL200°, 47%, 17%

HSV200°, 63%, 25%

CMYK63, 21, 0, 75

Decimal1520191

CSS RGBrgb(23, 50, 63)

CSS HSLhsl(200, 47%, 17%)

Paint Matches — this color across 16 brands

Sherwin-Williams

Dark Night SW6237

ΔE 5.1 · #23383F

Dulux

Adept S36B9

ΔE 5.2 · #293A47

Behr

Night Shade 740F-7

ΔE 5.6 · #243A41

RAL

Green Blue 5001

ΔE 6.3 · #1F3438

Benjamin Moore

North CC-932

ΔE 7 · #2C3C4D

Vista Paint

In the Navy K-800

ΔE 7.6 · #313B45

Dunn-Edwards

Old Mill DEA185

ΔE 9.9 · #343B4E

Hallman-Lindsay

Atlantic Waves 473

ΔE 10.9 · #264243

PPG

Sailor's Coat 1153-7

ΔE 11.2 · #334B58

Colorhouse

Nourish .06 Nourish-06

ΔE 11.2 · #313536

Kilz

Night Magic RM230

ΔE 12 · #3C4348

Kobra

Blue 31

ΔE 12.1 · #334059

Valspar

Twilight Purple 4010-2

ΔE 12.5 · #3E3B46

IKEA

IKEA186 186

ΔE 13 · #302F2F

Farrow & Ball

Hague Blue 30

ΔE 13.4 · #3D4E57

Dutch Boy

Royal Blue D-6740

ΔE 17 · #1D375C

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

TemperatureCool MasstoneBlue UndertoneViolet

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

Color Theory

Complementary

#17323F

#402517

Analogous

#174039

#17323F

#171E40

Triadic

#17323F

#401732

#324017

Split-Complementary

#17323F

#40171E

#403917

Tetradic

#17323F

#391740

#402517

#1E4017

Monochromatic

#070F13

#17323F

#2B5E78

#408BB0

Rectangle

#17323F

#251740

#402517

#324017

Compound

#17323F

#171E40

#402517

#403917

Variations

Lighter

#2D637E

#4D91B3

#9DBDCD

Darker

#122834

#0C1C24

#061015

Saturation

#252D31

#173240

#0B364B

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

13.42:1

AAA

vs Black

1.56:1

Fail

Deuteranopia

#17323F

#262C40

Original → Simulated

Protanopia

#17323F

#2F2F3D

Original → Simulated

Tritanopia

#17323F

#163432

Original → Simulated

Color Psychology

Focused · Cooling

Blue 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

#51524A

Warm Bulb 2700K

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

#17323F

Daylight 5500K

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

#3E576F

Cool Bulb 6500K

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

Pairs With

#E9EBEC

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.

#40281C

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: #17323F;

CSS — background

background-color: #17323F;

CSS Variable

--color-blue: #17323F;

Tailwind v3 — config

colors: { 'blue': '#17323F' }

Tailwind — arbitrary

bg-[#17323F] text-[#17323F]

SCSS

$blue: #17323F;

Similar Colors

North Sea

#2B3B4C · ΔE 6.6

Hidden Sapphire

#023B4E · ΔE 6.9

Deep Royal

#2F394B · ΔE 8.1

Polo Blue

#323A43 · ΔE 8.2

Twilight

#254455 · ΔE 8.3

Old Navy

#2E3549 · ΔE 9.2

Pacific Sea Teal

#274043 · ΔE 9.2

Teal

#144552 · ΔE 9.4

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 #17323F?

#17323F is Blue, a near-black blue with a cool undertone.

Is #17323F warm or cool?

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

What rooms work best with Blue?

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

What colors pair well with Blue?

Blue 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 Blue?

You can download Blue 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 Blue?

The hex code is #17323F. In RGB it's 23, 50, 63, and in HSL it's 200°, 47%, 17%.

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