#66D039#66D039

#66D039 is a light, highly saturated green. Relative luminance 0.482; OKLCH L 76.5% C 0.209 H 138.2°. Best body text is #000000 at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#66D039
RGB	rgb(102, 208, 57)
HSL	hsl(102, 62%, 52%)
HSV	hsv(102, 73%, 82%)
CMYK	cmyk(51%, 0%, 72.6%, 18.4%)
CIE-LAB	lab(74.97, -56.38, 61.86)
CIE-LCH	lch(74.97, 83.70, 132.35°)
OKLab	oklab(76.55% -0.1558 0.1395)
OKLCH	oklch(76.55% 0.209 138.2)
XYZ	xyz(28.7729, 48.2298, 11.6632)
Luminance	0.4823 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D039 #A339D0

analogous

#B2D039 #66D039 #39D057

triadic

#66D039 #3966D0 #D03966

tetradic

#66D039 #39B2D0 #A339D0 #D05739

square

#66D039 #39B2D0 #A339D0 #D05739

split-complementary

#66D039 #5739D0 #D039B2

monochromatic

#36731B #4DA527 #66D039 #8CDC6A #B2E79C

Accessibility & contrast

On white

1.97

#66D039 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.65

#66D039 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D039

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D039	#FFFFFF	#000000	##000000
##66D039	1.00	1.97	10.65	10.65
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.65	21.00	1.00	1.00
##000000	10.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6BE1D

Deuteranopia (green-blind)

#C9B548

Tritanopia (blue-blind)

#5EC9B3

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #66d039;
/* rgb */ color: rgb(102, 208, 57);
/* oklch */ color: oklch(76.5% 0.209 138.2);

Tailwind

colors: {
  custom: {
    50: '#9bdf79',
    500: '#66d039',
    950: '#000000',
  },
}

SCSS

$custom: #66d039;
$custom-light: #9bdf79;
$custom-dark: #000000;

JSON

{
  "hex": "#66d039",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 57
  },
  "hsl": {
    "h": 102.119,
    "s": 61.633,
    "l": 51.961
  },
  "oklch": {
    "l": 0.76547,
    "c": 0.20911,
    "h": 138.2
  },
  "luminance": 0.48232
}

Semantic roles & 50–950 ramp

primary

#66D039

secondary

#C091D3

accent

#43E5B5

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66D039

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

Preview Lab → · Contrast checker → · Palette generator →