GREENS

Bright Green

#66FF00

RGB 102, 255, 0 · HSL 96°, 100%, 50% · CMYK 60, 0, 100, 0

Bright Green is #66FF00 in HEX — rgb(102, 255, 0), hsl(96°, 100%, 50%), cmyk(60%, 0%, 100%, 0%).

Bright Green pulls into the mid-tone end of the greens spectrum — HSL 96°, 100%, 50%. The saturated saturation makes it bold and immediate, and the hue reads warm. In interior projects it shines on bedrooms, bathrooms, libraries — for grounding, restorative spaces. Reads best alongside soft white walls, oak floors, brass, warm clay accents.

Color Codes

HEX#66FF00

RGB102, 255, 0

HSL96°, 100%, 50%

HSV96°, 100%, 100%

CMYK60, 0, 100, 0

Decimal6749952

CSS RGBrgb(102, 255, 0)

CSS HSLhsl(96, 100%, 50%)

Paint Matches — this color across 16 brands

Behr

Barnyard Grass 440B-6

ΔE 10.9 · #50E80D

Dulux

Effervescent Lime S21H9 · SB8B6

ΔE 35.4 · #9EDA2C

RAL

Luminous Green 6038

ΔE 37.1 · #00BB2D

Benjamin Moore

Paradise 2031-20

ΔE 42.7 · #63B525

Kobra

Fluo 52

ΔE 43.4 · #00B131

Vista Paint

Wilderness Retreat K-320

ΔE 44.2 · #5AB32C

Dutch Boy

Temptations VS-9503

ΔE 46.5 · #A3CD39

Dunn-Edwards

Lime Twist DEA124

ΔE 50.6 · #C6D624

Sherwin-Williams

Electric Lime SW6921

ΔE 51.9 · #9ABA25

PPG

Funky Frog 1221-7

ΔE 53.8 · #98BD3C

Valspar

Martian 6007-8C

ΔE 54.7 · #A7C646

Kilz

Green Gone Wild LH270

ΔE 60 · #CCC921

Hallman-Lindsay

Green Gone Wild 774

ΔE 61.1 · #73A236

Colorhouse

Petal .02 Petal-02

ΔE 63.1 · #C3D263

IKEA

IKEA075 75

ΔE 75.1 · #E2E38D

Farrow & Ball

Citron 74

ΔE 84.7 · #F5D27B

Light Reflectance & Undertone

Light Reflectance Value (LRV)

74/100

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

TemperatureNeutral MasstoneYellow-Green UndertoneYellow

Reads as a neutral yellow-Green with a yellow undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#66FF00

#9900FF

Analogous

#E6FF00

#66FF00

#00FF19

Triadic

#66FF00

#0066FF

#FF0066

Split-Complementary

#66FF00

#1900FF

#FF00E6

Tetradic

#66FF00

#00E5FF

#9900FF

#FF1A00

Monochromatic

#296600

#47B300

#66FF00

#94FF4D

#C2FF99

Rectangle

#66FF00

#00FF99

#9900FF

#FF0066

Compound

#66FF00

#00FF19

#9900FF

#FF00E6

Variations

Lighter

#85FF33

#A5F471

#CCF2B3

Darker

#52CC00

#388C00

#215200

Saturation

#78A659

#66FF00

Interior Use

Best Rooms

bedrooms, bathrooms, libraries

Best Uses

main walls, cabinetry, soft furniture

Pairs With

soft white walls, oak floors, brass, warm clay accents

Accessibility (WCAG)

vs White

1.32:1

Fail

vs Black

15.87:1

AAA

Deuteranopia

#66FF00

#E4CE2E

Original → Simulated

Protanopia

#66FF00

#EEEE65

Original → Simulated

Tritanopia

#66FF00

#86EAF2

Original → Simulated

Color Psychology

Calm · Restorative

Bright Green sits in the part of the spectrum the eye relaxes into. Designers reach for green when a room needs to feel like a refuge — bedrooms, libraries, bathrooms — because it lowers visual blood-pressure without flattening the space.

SymbolismGrowth, balance, nature

PersonalitySteady, grounded, thoughtful

calmnaturerestorativebalancebedroomlibrary

How it looks under different light

#8CEC1B

Warm Bulb 2700K

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

#66FF00

Daylight 5500K

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

#79F13F

Cool Bulb 6500K

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

Pairs With

#EAEEE7

Trim

Matched off-white

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

#F7F8F7

Ceiling

Whisper tint

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

#7E16C3

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: #66FF00;

CSS — background

background-color: #66FF00;

CSS Variable

--color-bright-green: #66FF00;

Tailwind v3 — config

colors: { 'bright-green': '#66FF00' }

Tailwind — arbitrary

bg-[#66FF00] text-[#66FF00]

SCSS

$bright-green: #66FF00;

Similar Colors

Paradise Green

#62B424 · ΔE 42.9

Neon Lime

#50AB18 · ΔE 43.7

Lime Green

#97C100 · ΔE 44.2

Sweet Pea

#78BF38 · ΔE 44.6

Margarita

#A4C700 · ΔE 45.0

Tropical Seaweed Green

#48AB2C · ΔE 47.1

Lucky Charm Green

#61B83E · ΔE 47.3

Lizard Green

#33A122 · ΔE 49.0

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 #66FF00?

#66FF00 is Bright Green, a mid-tone green with a warm undertone.

Is #66FF00 warm or cool?

Bright Green reads warm, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Bright Green?

Bright Green works well in bedrooms, bathrooms, libraries. Designers typically use it for main walls, cabinetry, soft furniture.

What colors pair well with Bright Green?

Bright Green pairs naturally with soft white walls, oak floors, brass, warm clay accents. Its complementary color is also a strong contrast option for accents.

Where can I download Bright Green?

You can download Bright Green 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 Bright Green?

The hex code is #66FF00. In RGB it's 102, 255, 0, and in HSL it's 96°, 100%, 50%.

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