#66D339#66D339

#66D339 is a light, highly saturated green. Relative luminance 0.497; OKLCH L 77.3% C 0.213 H 138.3°. Best body text is #000000 at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#66D339
RGB	rgb(102, 211, 57)
HSL	hsl(102, 64%, 53%)
HSV	hsv(102, 73%, 83%)
CMYK	cmyk(51.7%, 0%, 73%, 17.3%)
CIE-LAB	lab(75.89, -57.50, 62.78)
CIE-LCH	lch(75.89, 85.13, 132.49°)
OKLab	oklab(77.3% -0.1588 0.1414)
OKLCH	oklch(77.3% 0.213 138.3)
XYZ	xyz(29.5112, 49.7065, 11.9093)
Luminance	0.4971 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D339 #A639D3

analogous

#B3D339 #66D339 #39D359

triadic

#66D339 #3966D3 #D33966

tetradic

#66D339 #39B3D3 #A639D3 #D35939

square

#66D339 #39B3D3 #A639D3 #D35939

split-complementary

#66D339 #5939D3 #D339B3

monochromatic

#36771A #4CA926 #66D339 #8DDE6B #B3E99D

Accessibility & contrast

On white

1.92

#66D339 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.94

#66D339 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D339

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D339	#FFFFFF	#000000	##000000
##66D339	1.00	1.92	10.94	10.94
#FFFFFF	1.92	1.00	21.00	21.00
#000000	10.94	21.00	1.00	1.00
##000000	10.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC11B

Deuteranopia (green-blind)

#CBB849

Tritanopia (blue-blind)

#5DCCB5

Achromatopsia (no color)

#BBBBBB

Design tokens & code

CSS

--color: #66d339;
/* rgb */ color: rgb(102, 211, 57);
/* oklch */ color: oklch(77.3% 0.213 138.3);

Tailwind

colors: {
  custom: {
    50: '#9ce179',
    500: '#66d339',
    950: '#000000',
  },
}

SCSS

$custom: #66d339;
$custom-light: #9ce179;
$custom-dark: #000000;

JSON

{
  "hex": "#66d339",
  "rgb": {
    "r": 102,
    "g": 211,
    "b": 57
  },
  "hsl": {
    "h": 102.468,
    "s": 63.636,
    "l": 52.549
  },
  "oklch": {
    "l": 0.77304,
    "c": 0.21263,
    "h": 138.3
  },
  "luminance": 0.49709
}

Semantic roles & 50–950 ramp

primary

#66D339

secondary

#C292D5

accent

#41E7B6

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66D339

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

Preview Lab → · Contrast checker → · Palette generator →