#66D83F#66D83F

#66D83F is a light, highly saturated green. Relative luminance 0.523; OKLCH L 78.6% C 0.215 H 139.0°. Best body text is #000000 at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#66D83F
RGB	rgb(102, 216, 63)
HSL	hsl(105, 66%, 55%)
HSV	hsv(105, 71%, 85%)
CMYK	cmyk(52.8%, 0%, 70.8%, 15.3%)
CIE-LAB	lab(77.46, -58.91, 62.23)
CIE-LCH	lch(77.46, 85.69, 133.43°)
OKLab	oklab(78.61% -0.1622 0.1411)
OKLCH	oklch(78.61% 0.215 139)
XYZ	xyz(30.9314, 52.2930, 13.1653)
Luminance	0.5230 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D83F #B13FD8

analogous

#B3D83F #66D83F #3FD865

triadic

#66D83F #3F66D8 #D83F66

tetradic

#66D83F #3FB3D8 #B13FD8 #D8653F

square

#66D83F #3FB3D8 #B13FD8 #D8653F

split-complementary

#66D83F #653FD8 #D83FB3

monochromatic

#35821A #4AB525 #66D83F #8FE272 #B7EDA5

Accessibility & contrast

On white

1.83

#66D83F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.46

#66D83F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D83F

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D83F	#FFFFFF	#000000	##000000
##66D83F	1.00	1.83	11.46	11.46
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.46	21.00	1.00	1.00
##000000	11.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DEC525

Deuteranopia (green-blind)

#D0BC4E

Tritanopia (blue-blind)

#5BD1BA

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #66d83f;
/* rgb */ color: rgb(102, 216, 63);
/* oklch */ color: oklch(78.6% 0.215 139.0);

Tailwind

colors: {
  custom: {
    50: '#9ce57d',
    500: '#66d83f',
    950: '#000000',
  },
}

SCSS

$custom: #66d83f;
$custom-light: #9ce57d;
$custom-dark: #000000;

JSON

{
  "hex": "#66d83f",
  "rgb": {
    "r": 102,
    "g": 216,
    "b": 63
  },
  "hsl": {
    "h": 104.706,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.78607,
    "c": 0.21498,
    "h": 139
  },
  "luminance": 0.52295
}

Semantic roles & 50–950 ramp

primary

#66D83F

secondary

#733289

accent

#3FE9BE

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F160A

muted

#80847D

Preview Lab

Preview with #66D83F

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

Preview Lab → · Contrast checker → · Palette generator →