BLUES

Blue

#2575A4

RGB 37, 117, 164 · HSL 202°, 63%, 39% · CMYK 77, 29, 0, 36

Blue is #2575A4 in HEX — rgb(37, 117, 164), hsl(202°, 63%, 39%), cmyk(77%, 29%, 0%, 36%).

Blue pulls into the rich end of the blues spectrum — HSL 202°, 63%, 39%. 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#2575A4

RGB37, 117, 164

HSL202°, 63%, 39%

HSV202°, 77%, 64%

CMYK77, 29, 0, 36

Decimal2454948

CSS RGBrgb(37, 117, 164)

CSS HSLhsl(202, 63%, 39%)

Paint Matches — this color across 16 brands

Benjamin Moore

Blue 784

Exact match

Behr

Sojourn Blue M500-5

ΔE 1.8 · #3077A7

PPG

North Sea 1239-6

ΔE 2.6 · #1D78AB

Sherwin-Williams

Danube SW6803

ΔE 2.9 · #2377A2

Dunn-Edwards

Summer Lake DE5838

ΔE 3 · #0077A7

Dulux

Quarterdeck S35E6

ΔE 3.5 · #1277A3

Vista Paint

Wakeby Beach K-137

ΔE 4.6 · #3E7DA8

Kilz

Triumph Blue RC280-01

ΔE 4.8 · #3F73A0

Kobra

Blue 29

ΔE 5.8 · #1882B4

Hallman-Lindsay

Peninsula 654

ΔE 7.5 · #37799C

Valspar

Burbling Brook 4007-8C

ΔE 8.6 · #5175A1

RAL

Light Blue 5012

ΔE 8.7 · #3B83BD

IKEA

IKEA128 128

ΔE 13.4 · #4A72B0

Farrow & Ball

Cook's Blue 237

ΔE 15.2 · #6A90B4

Dutch Boy

Blue Sea VS-9451

ΔE 22.3 · #2D61AD

Colorhouse

Dream .06 Dream-06

ΔE 23.6 · #0E707B

Light Reflectance & Undertone

Light Reflectance Value (LRV)

16/100

Dark

0 · DarkLight · 100

Soaks up light and feels moody and intimate. Great for studies, dining rooms and accent walls; pair with ample lighting.

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

#2575A4

#A25325

Analogous

#25A291

#2575A4

#2536A2

Triadic

#2575A4

#A22574

#74A225

Split-Complementary

#2575A4

#A22536

#A29125

Tetradic

#2575A4

#9125A2

#A25325

#36A225

Monochromatic

#081B25

#174764

#2575A4

#409DD4

#7EBDE2

Rectangle

#2575A4

#5325A2

#A25325

#74A225

Compound

#2575A4

#2536A2

#A25325

#A29125

Variations

Lighter

#3497D1

#70AFD4

#B1CFE1

Darker

#1B5E84

#11415D

#092637

Saturation

#516876

#2574A2

#1279B5

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

5.05:1

vs Black

4.16:1

AA Large

Deuteranopia

#2575A4

#5069A5

Original → Simulated

Protanopia

#2575A4

#6C6C9F

Original → Simulated

Tritanopia

#2575A4

#167D76

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

#5B8496

Warm Bulb 2700K

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

#2575A4

Daylight 5500K

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

#4889BA

Cool Bulb 6500K

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

Pairs With

#E8EBED

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.

#824827

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 · Doors · Mouldings

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: #2575A4;

CSS — background

background-color: #2575A4;

CSS Variable

--color-blue: #2575A4;

Tailwind v3 — config

colors: { 'blue': '#2575A4' }

Tailwind — arbitrary

bg-[#2575A4] text-[#2575A4]

SCSS

$blue: #2575A4;

Similar Colors

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#2474A3 · ΔE 0.4

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#006EA1 · ΔE 4.0

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#00719C · ΔE 4.2

Winter's Eve

#40729C · ΔE 5.5

Finley Blue

#4580A8 · ΔE 6.7

Old Glory

#396998 · ΔE 7.3

Athens Blue

#3D74AC · ΔE 7.9

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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 #2575A4?

#2575A4 is Blue, a deep blue with a cool undertone.

Is #2575A4 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 #2575A4. In RGB it's 37, 117, 164, and in HSL it's 202°, 63%, 39%.

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