BLUES

Hypothalamus Grey

#415D66

RGB 65, 93, 102 · HSL 195°, 22%, 33% · CMYK 36, 9, 0, 60

Hypothalamus Grey is #415D66 in HEX — rgb(65, 93, 102), hsl(195°, 22%, 33%), cmyk(36%, 9%, 0%, 60%).

Hypothalamus Grey pulls into the rich end of the blues spectrum — HSL 195°, 22%, 33%. The muted saturation makes it quiet but present, 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#415D66

RGB65, 93, 102

HSL195°, 22%, 33%

HSV195°, 36%, 40%

CMYK36, 9, 0, 60

Decimal4283750

CSS RGBrgb(65, 93, 102)

CSS HSLhsl(195, 22%, 33%)

Paint Matches — this color across 16 brands

Behr

Observatory PPU13-19

ΔE 1.4 · #455D66

Dulux

Jimbaran Bay S32A7

ΔE 2 · #3D5D64

Sherwin-Williams

Tempe Star SW6229

ΔE 2.2 · #47626A

PPG

Oceania 10-01

ΔE 2.2 · #425A65

Benjamin Moore

Newburg HC-158

ΔE 2.5 · #455A63

Kilz

Fathoms Below RE290-02

ΔE 2.8 · #3F5A5F

Hallman-Lindsay

Saxon Blue historic-saxon-blue

ΔE 3.2 · #435965

Vista Paint

Asher Benjamin C-1380

ΔE 4 · #45575E

Valspar

Perfect Storm 5001-6C

ΔE 4.2 · #4C6770

Dunn-Edwards

Slate Wall DE5797

ΔE 4.8 · #40535D

Colorhouse

Wool .06 Wool-06

ΔE 4.9 · #485761

Dutch Boy

Ocean Blue D-6743

ΔE 5.3 · #4C6A74

Farrow & Ball

Stiffkey Blue 281

ΔE 6.5 · #4D5B6A

RAL

Pearl Gentian Blue 5025

ΔE 9.6 · #2A6478

IKEA

IKEA152 152

ΔE 10.1 · #494F50

Kobra

Green 38

ΔE 13.8 · #415448

Light Reflectance & Undertone

Light Reflectance Value (LRV)

10/100

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

#415D66

#674B42

Analogous

#42675D

#415D66

#424B67

Triadic

#415D66

#67425D

#5D6742

Split-Complementary

#415D66

#67424B

#675D42

Tetradic

#415D66

#5D4267

#674B42

#4B6742

Monochromatic

#0A0E10

#243338

#415D66

#5F8895

#8CABB5

Rectangle

#415D66

#4B4267

#674B42

#5D6742

Compound

#415D66

#424B67

#674B42

#675D42

Variations

Lighter

#5C8390

#85A2AC

#BAC8CC

Darker

#344B53

#233439

#141E22

Saturation

#4F575A

#425D67

#216E87

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

7.04:1

AAA

vs Black

2.98:1

Fail

Deuteranopia

#415D66

#515667

Original → Simulated

Protanopia

#415D66

#595965

Original → Simulated

Tritanopia

#415D66

#415E5C

Original → Simulated

Color Psychology

Focused · Cooling

Hypothalamus Grey 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

#707268

Warm Bulb 2700K

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

#415D66

Daylight 5500K

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

#5D778C

Cool Bulb 6500K

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

Pairs With

#EAEBEB

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.

#593F36

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: #415D66;

CSS — background

background-color: #415D66;

CSS Variable

--color-hypothalamus-grey: #415D66;

Tailwind v3 — config

colors: { 'hypothalamus-grey': '#415D66' }

Tailwind — arbitrary

bg-[#415D66] text-[#415D66]

SCSS

$hypothalamus-grey: #415D66;

Similar Colors

Newburg Green

#445962 · ΔE 2.7

Stained Glass

#44646D · ΔE 2.9

Vermont Slate

#4C636E · ΔE 3.6

Spellbound

#4E646F · ΔE 4.2

Olympus Green

#3D585B · ΔE 4.4

In the Midnight Hour

#415663 · ΔE 4.4

Yorktowne Green

#465A5D · ΔE 4.5

Everard Blue

#3D5459 · ΔE 4.5

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 #415D66?

#415D66 is Hypothalamus Grey, a deep blue with a cool undertone.

Is #415D66 warm or cool?

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

What rooms work best with Hypothalamus Grey?

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

What colors pair well with Hypothalamus Grey?

Hypothalamus Grey 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 Hypothalamus Grey?

You can download Hypothalamus Grey 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 Hypothalamus Grey?

The hex code is #415D66. In RGB it's 65, 93, 102, and in HSL it's 195°, 22%, 33%.

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