BLUES

Shimmering Brook

#64B3D3

RGB 100, 179, 211 · HSL 197°, 56%, 61% · CMYK 53, 15, 0, 17

Shimmering Brook is #64B3D3 in HEX — rgb(100, 179, 211), hsl(197°, 56%, 61%), cmyk(53%, 15%, 0%, 17%).

Shimmering Brook pulls into the light end of the blues spectrum — HSL 197°, 56%, 61%. 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#64B3D3

RGB100, 179, 211

HSL197°, 56%, 61%

HSV197°, 53%, 83%

CMYK53, 15, 0, 17

Decimal6599635

CSS RGBrgb(100, 179, 211)

CSS HSLhsl(197, 56%, 61%)

Paint Matches — this color across 16 brands

Sherwin-Williams

Flyway SW6794

ΔE 1.5 · #5DB3D4

Dulux

Shimmering Brook S34E2

ΔE 3 · #64B7D3

Vista Paint

Sunrise River K-171

ΔE 3.3 · #56B5D6

Behr

Ocean View 560D-5

ΔE 3.4 · #69B2CC

Kilz

Bit Of Sapphire RD230-02

ΔE 3.5 · #52B2D3

Dunn-Edwards

Frozen Wave DE5829

ΔE 3.5 · #56ACCA

Valspar

Ocean Sigh 5002-10A

ΔE 3.6 · #51AECE

Benjamin Moore

Blue 782

ΔE 4.4 · #5FACD2

Hallman-Lindsay

Epimethius 660

ΔE 4.7 · #4BB2D5

Kobra

Blue 28

ΔE 6.4 · #4EB3CD

PPG

Harbor Sky 1238-4

ΔE 6.4 · #7EB6D0

Dutch Boy

Sky Blue D-6742

ΔE 7.9 · #7AC2D8

Farrow & Ball

St Giles Blue 280

ΔE 8.8 · #599EC4

IKEA

IKEA084 84

ΔE 11 · #83AAC1

RAL

Pastel Turquoise 6034

ΔE 18.1 · #7FB5B5

Colorhouse

Dream .03 Dream-03

ΔE 20.9 · #B4CBD9

Light Reflectance & Undertone

Light Reflectance Value (LRV)

40/100

Medium

0 · DarkLight · 100

Balanced reflectance — holds colour without washing out. Versatile for most rooms and the most forgiving range for true-to-chip results.

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

#64B3D3

#D38364

Analogous

#64D3BB

#64B3D3

#647CD3

Triadic

#64B3D3

#D364B4

#B4D364

Split-Complementary

#64B3D3

#D3647C

#D3BB64

Tetradic

#64B3D3

#BB64D3

#D38364

#7CD364

Monochromatic

#23627B

#3492B7

#64B3D3

#A0D1E4

#DBEEF5

Rectangle

#64B3D3

#8364D3

#D38364

#B4D364

Compound

#64B3D3

#647CD3

#D38364

#D3BB64

Variations

Lighter

#83C3DC

#A7D0E0

#CFE2EA

Darker

#339CC6

#216C8A

#124052

Saturation

#8BA3AC

#64B4D3

#4EBDE9

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

2.35:1

Fail

vs Black

8.93:1

AAA

Deuteranopia

#64B3D3

#91A2D5

Original → Simulated

Protanopia

#64B3D3

#A9A9CF

Original → Simulated

Tritanopia

#64B3D3

#62B7B2

Original → Simulated

Color Psychology

Focused · Cooling

Shimmering Brook 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

#8AB3B9

Warm Bulb 2700K

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

#64B3D3

Daylight 5500K

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

#78B8DE

Cool Bulb 6500K

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

Pairs With

#E9EBED

Trim

Matched off-white

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

#F7F8F8

Ceiling

Whisper tint

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

#BF6B4A

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 · Trim · Soft furniture

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: #64B3D3;

CSS — background

background-color: #64B3D3;

CSS Variable

--color-shimmering-brook: #64B3D3;

Tailwind v3 — config

colors: { 'shimmering-brook': '#64B3D3' }

Tailwind — arbitrary

bg-[#64B3D3] text-[#64B3D3]

SCSS

$shimmering-brook: #64B3D3;

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#5EABD1 · ΔE 4.6

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#7CB7D6 · ΔE 5.3

Sea to Shining Sea

#6DB4DC · ΔE 5.4

Cayman Blue

#73C1E4 · ΔE 5.4

St. Lucia Skies

#7DBCDB · ΔE 5.5

Aquarius

#7BBDE1 · ΔE 5.9

Atlantis Blue

#54B1C9 · ΔE 6.2

Pool Party

#76C4E2 · ΔE 6.3

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 #64B3D3?

#64B3D3 is Shimmering Brook, a soft blue with a cool undertone.

Is #64B3D3 warm or cool?

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

What rooms work best with Shimmering Brook?

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

What colors pair well with Shimmering Brook?

Shimmering Brook 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 Shimmering Brook?

You can download Shimmering Brook 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 Shimmering Brook?

The hex code is #64B3D3. In RGB it's 100, 179, 211, and in HSL it's 197°, 56%, 61%.

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