BLUES

Summer Waters

#215399

RGB 33, 83, 153 · HSL 215°, 65%, 36% · CMYK 78, 46, 0, 40

Summer Waters is #215399 in HEX — rgb(33, 83, 153), hsl(215°, 65%, 36%), cmyk(78%, 46%, 0%, 40%).

Summer Waters pulls into the rich end of the blues spectrum — HSL 215°, 65%, 36%. 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#215399

RGB33, 83, 153

HSL215°, 65%, 36%

HSV215°, 78%, 60%

CMYK78, 46, 0, 40

Decimal2184089

CSS RGBrgb(33, 83, 153)

CSS HSLhsl(215, 65%, 36%)

Paint Matches — this color across 16 brands

Benjamin Moore

Evening 2066-20

ΔE 2.9 · #014F94

Dunn-Edwards

Blue Chip DE5867

ΔE 2.9 · #1D5699

Hallman-Lindsay

Dancing Sea 641

ΔE 3.3 · #1C4D8F

Dulux

Summer Waters S39H8 · SB8E8

ΔE 3.5 · #215799

Vista Paint

Cascade Twilight K-128

ΔE 3.6 · #224B8F

Behr

Royal Breeze S-H-560

ΔE 3.9 · #0C4B93

PPG

Florentine Lapis 1244-7

ΔE 4.3 · #1C5798

Colorhouse

Petal .05 Petal-05

ΔE 5.3 · #1F4992

Dutch Boy

Blue Sea VS-9451

ΔE 6.4 · #2D61AD

Valspar

Deep Space 4008-8C

ΔE 10 · #38619B

Sherwin-Williams

Frank Blue SW6967

ΔE 10.2 · #225288

Kilz

Navy Dress RH210

ΔE 10.8 · #285489

RAL

Traffic Blue 5017

ΔE 13.2 · #063971

IKEA

IKEA128 128

ΔE 14.2 · #4A72B0

Kobra

Blue 30

ΔE 15.6 · #195584

Farrow & Ball

Pitch Blue 220

ΔE 26.7 · #636E8F

Light Reflectance & Undertone

Light Reflectance Value (LRV)

9/100

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

#215399

#976620

Analogous

#208E97

#215399

#2A2097

Triadic

#215399

#972052

#529720

Split-Complementary

#215399

#972A20

#8E9720

Tetradic

#215399

#97208E

#976620

#20972A

Monochromatic

#050E19

#133058

#215399

#3175D3

#709FE1

Rectangle

#215399

#662097

#976620

#529720

Compound

#215399

#2A2097

#976620

#8E9720

Variations

Lighter

#2C6FCD

#6794D3

#ACC2E0

Darker

#17417C

#0E2C57

#071A33

Saturation

#4A596E

#205297

#104FA8

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

7.60:1

AAA

vs Black

2.76:1

Fail

Deuteranopia

#215399

#285199

Original → Simulated

Protanopia

#215399

#4D4D92

Original → Simulated

Tritanopia

#215399

#006257

Original → Simulated

Color Psychology

Focused · Cooling

Summer Waters 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

#586B8E

Warm Bulb 2700K

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

#215399

Daylight 5500K

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

#4570B2

Cool Bulb 6500K

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

Pairs With

#E8EAED

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.

#795523

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: #215399;

CSS — background

background-color: #215399;

CSS Variable

--color-summer-waters: #215399;

Tailwind v3 — config

colors: { 'summer-waters': '#215399' }

Tailwind — arbitrary

bg-[#215399] text-[#215399]

SCSS

$summer-waters: #215399;

Similar Colors

Evening Blue

#004E93 · ΔE 3.1

Twilight Blue

#365496 · ΔE 3.9

Warriors Blue

#00498D · ΔE 4.6

Delphinium

#304C89 · ΔE 6.4

Mosaic

#3862A3 · ΔE 7.4

Dark Royal Blue

#144B86 · ΔE 7.5

Big Country Blue

#0066B1 · ΔE 9.1

Brilliant Blue

#0063A6 · ΔE 9.1

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 #215399?

#215399 is Summer Waters, a deep blue with a cool undertone.

Is #215399 warm or cool?

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

What rooms work best with Summer Waters?

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

What colors pair well with Summer Waters?

Summer Waters 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 Summer Waters?

You can download Summer Waters 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 Summer Waters?

The hex code is #215399. In RGB it's 33, 83, 153, and in HSL it's 215°, 65%, 36%.

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