#66D439#66D439

#66D439 is a light, highly saturated green. Relative luminance 0.502; OKLCH L 77.6% C 0.214 H 138.4°. Best body text is #000000 at 11.04:1 contrast (WCAG AA passes).

Color values

HEX	#66D439
RGB	rgb(102, 212, 57)
HSL	hsl(103, 64%, 53%)
HSV	hsv(103, 73%, 83%)
CMYK	cmyk(51.9%, 0%, 73.1%, 16.9%)
CIE-LAB	lab(76.19, -57.87, 63.09)
CIE-LCH	lch(76.19, 85.61, 132.53°)
OKLab	oklab(77.56% -0.1598 0.1421)
OKLCH	oklch(77.56% 0.214 138.4)
XYZ	xyz(29.7604, 50.2049, 11.9924)
Luminance	0.5021 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D439 #A739D4

analogous

#B3D439 #66D439 #39D45A

triadic

#66D439 #3966D4 #D43966

tetradic

#66D439 #39B3D4 #A739D4 #D45A39

square

#66D439 #39B3D4 #A739D4 #D45A39

split-complementary

#66D439 #5A39D4 #D439B3

monochromatic

#36781A #4CAB25 #66D439 #8DDF6B #B4EA9E

Accessibility & contrast

On white

1.90

#66D439 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.04

#66D439 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D439

11.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D439	#FFFFFF	#000000	##000000
##66D439	1.00	1.90	11.04	11.04
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.04	21.00	1.00	1.00
##000000	11.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DBC21B

Deuteranopia (green-blind)

#CCB849

Tritanopia (blue-blind)

#5DCDB6

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66d439;
/* rgb */ color: rgb(102, 212, 57);
/* oklch */ color: oklch(77.6% 0.214 138.4);

Tailwind

colors: {
  custom: {
    50: '#9ce279',
    500: '#66d439',
    950: '#000000',
  },
}

SCSS

$custom: #66d439;
$custom-light: #9ce279;
$custom-dark: #000000;

JSON

{
  "hex": "#66d439",
  "rgb": {
    "r": 102,
    "g": 212,
    "b": 57
  },
  "hsl": {
    "h": 102.581,
    "s": 64.315,
    "l": 52.745
  },
  "oklch": {
    "l": 0.77556,
    "c": 0.2138,
    "h": 138.4
  },
  "luminance": 0.50207
}

Semantic roles & 50–950 ramp

primary

#66D439

secondary

#693180

accent

#40E7B7

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F150A

muted

#80847D

Preview Lab

Preview with #66D439

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →