BLUES

Platonic Blue

#88CCFF

RGB 136, 204, 255 · HSL 206°, 100%, 77% · CMYK 47, 20, 0, 0

Platonic Blue is #88CCFF in HEX — rgb(136, 204, 255), hsl(206°, 100%, 77%), cmyk(47%, 20%, 0%, 0%).

Platonic Blue pulls into the light end of the blues spectrum — HSL 206°, 100%, 77%. The saturated saturation makes it bold and immediate, 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#88CCFF

RGB136, 204, 255

HSL206°, 100%, 77%

HSV206°, 47%, 100%

CMYK47, 20, 0, 0

Decimal8965375

CSS RGBrgb(136, 204, 255)

CSS HSLhsl(206, 100%, 77%)

Paint Matches — this color across 16 brands

Behr

Bayou 570B-4

ΔE 4.1 · #8FD0FC

Benjamin Moore

True 2066-50

ΔE 7.2 · #6DBBEB

Dunn-Edwards

Light Azure DE5842

ΔE 7.2 · #92CBF1

Vista Paint

Blue Sky K-132

ΔE 7.5 · #8EC1E9

Hallman-Lindsay

Watery Sea 638

ΔE 7.5 · #88BFE7

Dulux

Blue Shutters S39H2

ΔE 8.7 · #93C0E7

Valspar

Sea Frolic 4008-10A

ΔE 9.1 · #6DB9E3

PPG

Xavier Blue 1240-4

ΔE 9.9 · #6AB4E0

Sherwin-Williams

Undercool SW6957

ΔE 12.1 · #7FC3E1

Kilz

Azure Pool RD240-01

ΔE 12.5 · #67B0D7

IKEA

IKEA085 85

ΔE 13.8 · #9FC1DF

Dutch Boy

Sky Blue D-6742

ΔE 16.8 · #7AC2D8

Farrow & Ball

St Giles Blue 280

ΔE 18.3 · #599EC4

Kobra

Blue 27

ΔE 19.8 · #87C8D7

Colorhouse

Dream .03 Dream-03

ΔE 22.4 · #B4CBD9

RAL

Light Blue 5012

ΔE 27.5 · #3B83BD

Light Reflectance & Undertone

Light Reflectance Value (LRV)

56/100

Light

0 · DarkLight · 100

Reflects plenty of light and keeps spaces feeling open and airy while still showing clear colour. A safe, flexible choice for living areas.

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

#88CCFF

#FFBD8A

Analogous

#8AFFF7

#88CCFF

#8A92FF

Triadic

#88CCFF

#FF8ACC

#CCFF8A

Split-Complementary

#88CCFF

#FF8A92

#FFF78A

Tetradic

#88CCFF

#F78AFF

#FFBD8A

#92FF8A

Monochromatic

#0088F0

#3DABFF

#88CCFF

#D6EDFF

#E5F4FF

Rectangle

#88CCFF

#BD8AFF

#FFBD8A

#CCFF8A

Compound

#88CCFF

#8A92FF

#FFBD8A

#FFF78A

Variations

Lighter

#A1D6FF

#BEE0FA

#DCECF9

Darker

#3BAAFF

#007AD8

#00477E

Saturation

#B3C7D6

#8ACCFF

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

1.73:1

Fail

vs Black

12.13:1

AAA

Deuteranopia

#88CCFF

#A8BEFF

Original → Simulated

Protanopia

#88CCFF

#C3C3F9

Original → Simulated

Tritanopia

#88CCFF

#83D4CC

Original → Simulated

Color Psychology

Focused · Cooling

Platonic 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

#A5C6DA

Warm Bulb 2700K

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

#88CCFF

Daylight 5500K

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

#93CBFF

Cool Bulb 6500K

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

Pairs With

#E7EBEE

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.

#ED9D60

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: #88CCFF;

CSS — background

background-color: #88CCFF;

CSS Variable

--color-platonic-blue: #88CCFF;

Tailwind v3 — config

colors: { 'platonic-blue': '#88CCFF' }

Tailwind — arbitrary

bg-[#88CCFF] text-[#88CCFF]

SCSS

$platonic-blue: #88CCFF;

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#7BBDE1 · ΔE 9.8

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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 #88CCFF?

#88CCFF is Platonic Blue, a soft blue with a cool undertone.

Is #88CCFF warm or cool?

Platonic Blue reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Platonic Blue?

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

What colors pair well with Platonic Blue?

Platonic 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 Platonic Blue?

You can download Platonic 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 Platonic Blue?

The hex code is #88CCFF. In RGB it's 136, 204, 255, and in HSL it's 206°, 100%, 77%.

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