BLUES

Mountain River

#475F77

RGB 71, 95, 119 · HSL 210°, 25%, 37% · CMYK 40, 20, 0, 53

Mountain River is #475F77 in HEX — rgb(71, 95, 119), hsl(210°, 25%, 37%), cmyk(40%, 20%, 0%, 53%).

Mountain River pulls into the rich end of the blues spectrum — HSL 210°, 25%, 37%. 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#475F77

RGB71, 95, 119

HSL210°, 25%, 37%

HSV210°, 40%, 47%

CMYK40, 20, 0, 53

Decimal4677495

CSS RGBrgb(71, 95, 119)

CSS HSLhsl(210, 25%, 37%)

Paint Matches — this color across 16 brands

Dulux

Stream S38E7

ΔE 1.3 · #48607A

PPG

Blue Fjord 1163-6

ΔE 1.8 · #4C6177

Valspar

Baritone Blues 4010-6

ΔE 1.9 · #4C6278

Kilz

Stormy Sea RC140-02

ΔE 2 · #4C617B

Benjamin Moore

Kensington 840 · CC-780

ΔE 3.1 · #4C5B72

Dunn-Edwards

Stormy Sea DE5817

ΔE 3.2 · #4A657A

Behr

English Channel PPU14-19

ΔE 3.5 · #4E6174

Sherwin-Williams

Luxe Blue SW6537

ΔE 4.4 · #516582

Vista Paint

Blue Suede Shoes K-153

ΔE 5.3 · #40677E

Hallman-Lindsay

Happy Tune 648

ΔE 5.5 · #345875

Farrow & Ball

Stiffkey Blue 281

ΔE 6.2 · #4D5B6A

IKEA

IKEA122 122

ΔE 7.4 · #3A5170

RAL

Pigeon Blue 5014

ΔE 8.5 · #606E8C

Colorhouse

Wool .06 Wool-06

ΔE 9.3 · #485761

Dutch Boy

Ocean Blue D-6743

ΔE 10 · #4C6A74

Kobra

Blue 31

ΔE 13.1 · #334059

Light Reflectance & Undertone

Light Reflectance Value (LRV)

11/100

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

#475F77

#765E47

Analogous

#477676

#475F77

#474776

Triadic

#475F77

#76475E

#5E7647

Split-Complementary

#475F77

#764747

#767647

Tetradic

#475F77

#764776

#765E47

#477647

Monochromatic

#0D1216

#2A3846

#475F77

#6685A3

#96ABC0

Rectangle

#475F77

#5E4776

#765E47

#5E7647

Compound

#475F77

#474776

#765E47

#767647

Variations

Lighter

#5F7E9E

#8A9FB3

#BDC7D1

Darker

#384B5F

#263442

#161E27

Saturation

#575E65

#475E76

#235E99

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

6.62:1

vs Black

3.17:1

AA Large

Deuteranopia

#475F77

#515A78

Original → Simulated

Protanopia

#475F77

#5B5B74

Original → Simulated

Tritanopia

#475F77

#45635F

Original → Simulated

Color Psychology

Focused · Cooling

Mountain River 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

#757474

Warm Bulb 2700K

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

#475F77

Daylight 5500K

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

#627999

Cool Bulb 6500K

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

Pairs With

#EAEBEC

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.

#64503C

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: #475F77;

CSS — background

background-color: #475F77;

CSS Variable

--color-mountain-river: #475F77;

Tailwind v3 — config

colors: { 'mountain-river': '#475F77' }

Tailwind — arbitrary

bg-[#475F77] text-[#475F77]

SCSS

$mountain-river: #475F77;

Similar Colors

Kensington Blue

#4B5A71 · ΔE 3.3

Van Deusen Blue

#485B6E · ΔE 3.6

Indi Go-Go

#445772 · ΔE 4.1

Lucerne

#3A647D · ΔE 5.3

Hudson Bay

#3F5266 · ΔE 5.8

Summer Nights

#34586C · ΔE 5.9

Newburyport Blue

#465566 · ΔE 6.1

Blue Heron

#5C6A85 · ΔE 6.5

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 #475F77?

#475F77 is Mountain River, a deep blue with a cool undertone.

Is #475F77 warm or cool?

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

What rooms work best with Mountain River?

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

What colors pair well with Mountain River?

Mountain River 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 Mountain River?

You can download Mountain River 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 Mountain River?

The hex code is #475F77. In RGB it's 71, 95, 119, and in HSL it's 210°, 25%, 37%.

← All colors