#66D842#66D842

#66D842 is a light, highly saturated green. Relative luminance 0.523; OKLCH L 78.6% C 0.213 H 139.2°. Best body text is #000000 at 11.47:1 contrast (WCAG AA passes).

Color values

HEX	#66D842
RGB	rgb(102, 216, 66)
HSL	hsl(106, 66%, 55%)
HSV	hsv(106, 69%, 85%)
CMYK	cmyk(52.8%, 0%, 69.4%, 15.3%)
CIE-LAB	lab(77.48, -58.68, 61.15)
CIE-LCH	lch(77.48, 84.74, 133.82°)
OKLab	oklab(78.63% -0.1614 0.1392)
OKLCH	oklch(78.63% 0.213 139.2)
XYZ	xyz(31.0175, 52.3274, 13.6189)
Luminance	0.5233 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D842 #B442D8

analogous

#B1D842 #66D842 #42D869

triadic

#66D842 #4266D8 #D84266

tetradic

#66D842 #42B1D8 #B442D8 #D86942

square

#66D842 #42B1D8 #B442D8 #D86942

split-complementary

#66D842 #6942D8 #D842B1

monochromatic

#34841B #49B726 #66D842 #8FE275 #B8EDA7

Accessibility & contrast

On white

1.83

#66D842 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.47

#66D842 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D842

11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D842	#FFFFFF	#000000	##000000
##66D842	1.00	1.83	11.47	11.47
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.47	21.00	1.00	1.00
##000000	11.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DEC52B

Deuteranopia (green-blind)

#D0BC50

Tritanopia (blue-blind)

#5BD1BA

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #66d842;
/* rgb */ color: rgb(102, 216, 66);
/* oklch */ color: oklch(78.6% 0.213 139.2);

Tailwind

colors: {
  custom: {
    50: '#9ce57e',
    500: '#66d842',
    950: '#000000',
  },
}

SCSS

$custom: #66d842;
$custom-light: #9ce57e;
$custom-dark: #000000;

JSON

{
  "hex": "#66d842",
  "rgb": {
    "r": 102,
    "g": 216,
    "b": 66
  },
  "hsl": {
    "h": 105.6,
    "s": 65.789,
    "l": 55.294
  },
  "oklch": {
    "l": 0.7863,
    "c": 0.21312,
    "h": 139.2
  },
  "luminance": 0.5233
}

Semantic roles & 50–950 ramp

primary

#66D842

secondary

#76338B

accent

#3FE9C0

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F160A

muted

#80847D

Preview Lab

Preview with #66D842

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

Preview Lab → · Contrast checker → · Palette generator →